To mark World Sleep Day 2026, a global study of Samsung Health users^[2] is shedding new light on the true extent of the condition and the disruptive impact it has on your sleep. Aligned with this year’s World Sleep Day theme, “Sleep Well, Live Better,” Samsung is turning the invisible signs of sleep apnea into actionable insights through its Galaxy Watch series, helping those affected improve their sleep habits and overall health.

How Does Sleep Apnea Impact Your Sleep?

The report found that 23% of study participants are at risk of sleep apnea.

“The microarousals and awakenings that follow breathing pauses fragment your sleep,” explains behavioral sleep scientist Dr. Vanessa Hill. “Those occurrences can prevent the brain from staying in the REM and deep sleep stages necessary for cognitive and physical restoration.”

The report shows these constant disruptions take a direct toll on sleep duration and quality, leading to:

• Reduced REM Sleep: Participants with moderate to severe sleep apnea indicators detected by their Galaxy Watch got around four minutes less rapid eye movement (REM) sleep, the phase where our brains process emotions, consolidate memories and cement learning. Without enough of it, people can experience mood instability and memory problems, impacting performance at work and overall well-being.
• Less Deep Sleep: Sleep apnea also robs sufferers of deep sleep, approximately eight minutes less per night, on average. This is the body’s critical physical restoration phase, where growth hormone is released, muscles are repaired, and your immune system is activated. Losing out on deep sleep is why you may feel physically exhausted, have slower recovery times, and get sick more often.
• Frequent Nightly Awakenings: Study participants with signs of sleep apnea also woke up regularly during the night and stayed awake around four minutes longer. These interruptions derail the sleep cycle, locking you into lighter, less restorative stages and making next-day exhaustion inevitable, no matter how long you slept.
• Shorter Sleep Duration: Overall, people with a higher likelihood of sleep apnea averaged around 12 minutes less sleep. While this loss may seem minor, it can have a significant impact on overall sleep quality as your sleep cycle gets fragmented throughout the night.

Why It Matters: “Even a small loss in sleep duration is compounded by a larger loss of sleep quality,” said Dr. Hill. “This can be the difference between simply being ‘in bed’ and getting restorative rest, which could be why people feel so tired the next day.”

Dr. Hill also advocates a multidimensional approach to sleep health. “Sleep apnea affects many dimensions of sleep — duration, quality, sleep efficiency and even daytime fatigue,” she stated. “They together help determine our health and functioning.”

With sleep apnea shown to impact all aspects of sleep and lead to other health complications, detection is an essential first step in the fight against the condition.

How Does Galaxy Watch Help Detect Signs of Moderate to Severe Sleep Apnea?   

For years, sleep apnea has been difficult to detect due to the need for inconvenient hospital tests. However, Samsung offers at-home detection with a first-of-its-kind Sleep Apnea^[3] feature on your Galaxy Watch.

• How It Works: Users simply track their sleep with a compatible Galaxy Watch^[4] for more than four hours over two nights within a ten-day period. Available through the Samsung Health Monitor app, the Sleep Apnea feature enables users to proactively spot signs of the condition. Initially launched in Korea, the feature has since received De Novo authorization from the U.S. FDA and is now available in 78 markets^[5] worldwide and counting.
• The Technology: Leveraging the Galaxy Watch’s BioActive Sensor, the feature tracks blood oxygen levels to determine when the user stops breathing (apnea) or is not breathing enough (hypopnea). Based on this data, the feature estimates the user’s Apnea-Hypopnea Index (AHI), which indicates the severity of obstructive sleep apnea(OSA).
• From Awareness to Action: By detecting signs of sleep apnea early, the feature provides the data needed for an informed consultation with a medical professional. In addition to tackling sleep apnea, your Galaxy Watch can help you build habits for better holistic sleep health. Features include the Sleep Coaching program for detailed analysis and tips on how to improve sleep quality and Bedtime Guidance,^[6] which recommends your optimal bedtime to ensure you consistently get enough sleep.

“For years, the inconvenience of an in-lab clinical sleep study has been a barrier to diagnosing sleep apnea,” added Dr. Hill. “Wearable technology such as Galaxy Watch is a breakthrough because it democratizes that first step. It allows people to gather meaningful data from their own beds, providing a starting point for a conversation with a healthcare professional.”

Take Control of Your Night

A good night’s sleep is the first step toward a healthier, more energized life, and Samsung is here to guide you. Samsung’s ecosystem offers end-to-end care, from detecting signs of sleep apnea on your Galaxy Watch to providing suggestions to receive professional adviceto connecting you with professional advice through our health network.

Looking ahead, Samsung is constantly innovating and improving the Sleep Apnea feature to make it even more powerful with sharper insights. Prioritize your rest today to unlock a healthier tomorrow.

^[1]“Obstructive Sleep Apnea National Indicator Report,” American Academy of Sleep Medicine (2023)

^[2]Samsung Health users from the U.S., South Korea, Brazil, Canada, Mexico, Russia, Chile, South Africa, and the Philippines participated in the study from January–June 2025.   

^[3]The Sleep Apnea feature is an over-the-counter (OTC), software-only, mobile medical application operating on a compatible Samsung Galaxy Watch and phone. It is intended for on demand use. Users should not use this feature to replace traditional methods of diagnosis and treatment by a qualified clinician. The data provided by this device is also not intended to assist clinicians in diagnosing sleep disorders. For users over the age of 22 who have not been diagnosed with sleep apnea, the feature monitors for signs of moderate to severe obstructive sleep apnea (OSA).

^[4]Availability may vary by market, carrier, model, or a paired smartphone. Available on Galaxy Watch4 series and later models. The watch requires the Wear OS 5.0 version or later and must be paired with a Samsung Galaxy smartphone with Android 12.0 or later.

^[5]Supported markets include Australia, Austria, Azerbaijan, Bahrain, Belgium, Bolivia, Brazil, Bulgaria, Canada, Chile, Christmas Island, Cocos (Keeling) Islands, Croatia, Cyprus, Czech Republic, Denmark, Dominican Republic, Ecuador, Egypt, El Salvador, Estonia, Faroe Islands, Finland, France, Georgia, Germany, Greece, Guatemala, Hong Kong, Hungary, Iceland, Iraq, Ireland, Israel, Italy, Jordan, Kuwait, Latvia, Lebanon, Lithuania, Luxembourg, Malaysia, Mauritius, Mayotte, Mexico, Netherlands, Nicaragua, Norfolk Island, Norway, Oman, Panama, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Romania, Russia, Réunion, Slovakia, Slovenia, South Africa, South Korea, Singapore, Spain, Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Thailand, United Arab Emirates, United Kingdom, United States, Venezuela, Vietnam, Yemen.

^[6]Bedtime guidance is available on Android phone (Android 11 and above) requires Samsung Health app (v6.30.2 or later). Bedtime guidance based on 3 days of sleep analysis of user’s circadian rhythm and sleep pressure. Intended for general wellness and fitness purposes only. The measurements are for your personal reference only. Not intended for use in detection, diagnosis, treatment of any medical condition or sleep disorder. Please consult a medical professional for advice.

[On-device Intelligence] Pocket-friendly AI features made possible with Galaxy AI and Gemini

[Personalised Insights] Now Bar and Now Brief on FlexWindow offers personalised updates right from the cover screen

[Launch Price] The Galaxy Z Fold7 starts from a recommended retail price of $1,648 at launch

Samsung Electronics Co., Ltd. today unveiled the Galaxy Z Flip7, a compact AI phone with multimodal capabilities, powered by a new FlexWindow. Small enough to slip into a pocket, yet powerful enough to deliver the handiest assistance, it melds Galaxy AI with a now edge-to-edge FlexWindow, a flagship-level camera and an ultra-compact iconic design. From intuitive voice AI to the best selfie capabilities, the Galaxy Z Flip7 is an intelligent pocket-sized companion built for seamless interaction and everyday reliability.

“The new Galaxy Z Flip7 will empower our consumers to do more than ever, thanks to the largest ever FlexWindow and advanced intelligence features – all within an ultra-compact design. Users can also look forward to a larger battery capacity, enhanced camera capabilities, and multimodal AI features, making the Galaxy Z Flip7 a trusted and smart companion^[1],” said Ronnie Ng, Head of Mobile eXperience, Samsung Electronics Singapore.

Biggest and Brightest FlexWindow Yet

The Galaxy Z Flip7 now features a new, stunning FlexWindow display that displays content from edge to edge. The display also brings notification essentials front and center, making it easy for consumers type out quick messages, check schedule at a glance and snap high-quality selfies. Galaxy Z Flip’s brightest FlexWindow yet delivers a super-smooth refresh rate, so everything looks vivid and feels fluid – even when outside on a sunny day.

• The4.1-inch^[2] Super AMOLED FlexWindow is the largest ever cover sceen on a Galaxy Z Flip, with edge-to-edge usability that enables users to see and do more.
• With 2,600 nits of peak brightness and a smooth 120Hz refresh rate on both the main display and the FlexWindow, the Galaxy Z Flip7 enables ultra-fluid scrolling, streaming and gaming. Plus, the FlexWindow gets an upgrade with Vision Booster, enhancing outdoor visibility so users can stay connected wherever they are.^[3]
• The main display is a 6.9-inch Dynamic AMOLED 2X^[4], built for an ultra-smooth and immersive experience.

Thinnest Yet Durable Galaxy Z Flip

The Galaxy Z Flip7 is crafted for portability and puts powerful performance right in the palm of the user’s hand. With its compact size and sleek silhouette, it slips effortlessly into a small pocket or purse, perfect for whatever the day brings. It is also built to last and engineered to handle the rigours of daily use.

• Weighing just 188 grams^[5] and measuring only 13.7mm when folded, the Galaxy Z Flip7 is the slimmest Galaxy Z Flip yet.
• The cover and back are protected by Corning® Gorilla® Glass Victus® 2.
• The Armor FlexHinge is thinner than the hinge on the previous generation, and features a restructured design built with high-strength materials for smoother folds and long-lasting durability.
• A robust Armor Aluminum Frame provides a tough exterior for resilience.^[6]

Power That Lasts Longer and Works Smarter

While the Galaxy Z Flip7 has been slimmed down and refined throughout, it now features a bigger battery and an even bigger display^[7] – all in a more compact form. With the largest battery capacity ever in the Galaxy Z Flip Series, users can stream music or listen to podcasts during long commutes, edit photos on the fly and share updates throughout the day without missing a beat.

• The 4,300mAh battery^[8] is the largest ever on a Galaxy Z Flipdelivering up to 31 hours of video play time on a single charge.^[9]
• The Galaxy Z Flip7 is powered by the latest 3nm processor, customised for Galaxy and fit for today’s lifestyle with an even more powerful CPU, GPU and NPU^[10] than the Galaxy Z Flip6.
• Samsung DeX comes to the Galaxy Z Flip7 for the first time, enabling it to instantly transform into a handy workstation: users can flip it open, connect to a screen and instantly get PC-like tools for enhanced multitasking.

Pocket-Perfect AI

With FlexWindow enhanced for greater usability and Galaxy AI^[11] that is smarter and more intuitive than ever, the Galaxy Z Flip7 introduces a new era of convenience and functionality, empowering consumers to search with their voice, get answers and take action directly on FlexWindow.

Powered by the newest One UI 8^[12] and Android 16 right out of the box, the Galaxy Z Flip7 delivers a true multimodal AI experience optimised for the Galaxy Flip’s iconic design, with many tasks now able to be handled right from the cover screen. This intuitive, one-handed experience enhances productivity and introduces even more personalisation options, making the Galaxy Z Flip7 a smart and handy companion.

The Galaxy Z Flip7 brings a new level of AI-powered personalisation tailored to users’ style and routine. From curated wallpaper suggestions to emoji, colour and widget customisation, the FlexWindow becomes a dynamic extension of a user’s personality. Whether prepping for travel or matching the  mood, personalisation is made effortless and always evolving.

• Gemini Live^[13] is now available directly on the FlexWindow, enabling users to search for information with their voice and complete tasks – hands-free. Users getting ready for an overseas trip can simply activate and tell Gemini what they need. It can pull up flight details^[14] from Samsung Wallet, set a reminder for when to leave for the airport and even find top-rated restaurants at the user’s destination. All of these information can be stored in Samsung Notes for easy access later. It’s like having a personal assistant, right on the cover screen.
• With camera sharing on Gemini Live, getting real-time help is made easy. Whether packing for a trip or choosing an outfit, users can simply share their screen with Gemini to show what they’re looking at and ask contextual questions such as, “Which of these outfits is better for the weather in Seoul?” and Gemini will respond, just like a helpful friend.
• Now Bar^[15] shows real-time app activity, podcast progress and alerts right on the cover screen, and it’s now integrated with even more third-party apps. A quick glance at the FlexWindow lets users check on the ETA of their rideshare, see what song is playing, peek at the latest football scores, and so much more.
• Now Brief^[16] provides even more personalised daily updates including traffic, reminders, calendar events, and fitness summaries. Users can get personalised music and video recommendations based on subscriptions and interests, as well as easily access health and wellness data pulled from Samsung Health and Galaxy Watch.
• The FlexWindow’s clock adapts and stretches to complement a user’s wallpaper, wrapping the font around faces or objects in the image to keep the time display clear. Whether it’s a close-up selfie or a scenic skyline, the lock screen ensures the clock remains visible without disrupting the image.

A Pocket-Sized Selfie Studio^[17]

With Samsung’s advanced ProVisual Engine, the Galaxy Z Flip7 now brings flagship-level photography to consumers, allowing them to intelligently optimise every scene to deliver crisp, detailed shots in any lighting and without any manual adjustments for the best shot. From playful pet moments to zoomed-in festival shots and glowing sunset portraits, the Galaxy Z Flip7 captures stunning results without a tripod or even unfolding the screen.

• The dual rear camera system includes a 50MP Wide^[18] and a 12MP Ultra-Wide lens, delivering flagship-level clarity in any lighting, whether capturing scenic shots or snapping high-quality selfies directly from the cover screen.
• With Enhanced Nightography, users can capture vivid photos in low-light environments through improved lighting adjustments and the removal of noise and blurred frames.
• 10-bit HDR provides richer colour, deeper contrast and more life-like detail in video, no matter the time of day.
• The Galaxy Z Flip7 takes selfies to the next level, right from the FlexWindow. Real-Time Filters now lets users preview and perfect FlexCam shots instantly. And with the new Zoom Slider, users can quickly zoom^[19] in or out with just a swipe – making it perfect for capturing a full outfit or fitting everyone into the frame for a flawless group selfie.
• With Dual Preview, the photographer and the subject can see the composition live on the FlexWindow, helping users nail the perfect shot on the first go.
• Everyday pet moments become eye-catching shots with Portrait Studio^[20] in Photo Assist. Consumers can choose to edit and enhance their shots with a playful cartoon style, a quirky fisheye look or a polished, professional finish.

Samsung Galaxy Z Flip7 FE: Unfolding Innovation for All  

Besides the Galaxy Z Flip7, Samsung also announced the Galaxy Z Flip7 FE, bringing the foldable experience to even more users. Compact when folded and expansive when opened, the Galaxy Z Flip7 FE features a 6.7-inch Main Display for an immersive viewing experience.

The 50MP FlexCam enables high-quality selfies and videos in Flex Mode, letting users capture content hands-free, without even opening the device. Now Brief surfaces helpful updates – including weather, daily schedules and commute alerts – on the cover screen, in a layout optimised for Galaxy Z Flip7 FE’s compact form. Available in Black and White, it delivers a minimalist look that complements its intelligent, foldable design.

Future-Ready Mobile Security

As mobile experiences grow ever more intelligent and interconnected, Samsung continues to evolve the foundations that protect them – unveiling new protections for on-device AI, expanding cross-device threat detection and enhancing network security with quantum-safe encryption.

One UI 8 brings enhanced privacy to personalised AI experiences with the new Knox Enhanced Encrypted Protection (KEEP).^[21] KEEP creates encrypted, app-specific storage environments within the device’s secure storage area, ensuring each app can access only its own sensitive information and nothing more.

With One UI 8, Samsung is advancing Knox Matrix to deliver more proactive and user-friendly protection across the Galaxy ecosystem. Furthermore, as part of its ongoing commitment to quantum-safe security, Samsung is integrating post-quantum cryptography into Secure Wi-Fi.^[22] This enhancement secures the key exchange process at the core of encrypted connections, helping ensure robust privacy even over public networks.

Local Availability

The Galaxy Z Flip7 will be available for pre-order in Singapore starting today, with general availability beginning 1 August 2025. The Galaxy Z Flip7 comes in^[23] Blue Shadow, Jetblack, Coralred and an online exclusive Mint^[24] colour. The Galaxy Flip7 FE is available in Black and White.

Consumers can also purchase Samsung Care+ Screen Care^[25] which offers comprehensive coverage for accidental damage, repairs, and replacements for greater peace of mind.

Get expanded access to Google AI Pro^[26] and 2TB of cloud storage for 6 months at no cost with Galaxy Z Flip7 and Galaxy Z Flip7 FE.

For more information about the Galaxy Z Flip7 and Galaxy Z Flip7 FE, please visit:

• https://www.samsung.com/sg/smartphones/galaxy-z-flip7/
• https://www.samsung.com/sg/smartphones/galaxy-z-flip7-fe/

^{[1] Compared to previous Galaxy Z Flip series.}

^{[2] Measured diagonally, Galaxy Z Flip7’s Cover Screen size is 4.1-inch in the full rectangular form; actual viewable area is less due to the rounded corners and camera hole.}

^{[3] Galaxy Z Flip7 has a peak brightness of 2600 nits on both the main screen and cover screen. The displays are adaptive, adjusting brightness level automatically based on the environment. In certain illuminance conditions or higher, High Brightness Mode and Vision Booster will be activated.}

^{[4] Measured diagonally, Galaxy Z Flip7’s Main Screen size is 6.9-inch in the full rectangle and 6.8-inch accounting for the rounded corners; actual viewable area is less due to the rounded corners and camera hole.}

^{[5] Weight may vary by country or region.}

^{[6] Armor Aluminum frame does not include volume and side keys, SIM tray or camera lens barrel.}

^{[7] Compared to previous Galaxy Z Flip series.}

^{[8] Typical value tested under third-party laboratory condition. Typical value is the estimated average value considering the deviation in battery capacity among the battery samples tested under IEC 61960 standard. Rated capacity is 4174 mAh for Galaxy Z Flip7.}

^{[9] Based on Samsung internal lab test conditions with pre-release version of given model connected to earphone via Bluetooth under default settings over LTE. Estimated against battery capacity and measured current over battery power consumption during video playback (video file resolution 720p, saved on device). Actual video playback time may vary by network connection, settings, video file format, screen brightness, battery condition and many other factors. Actual battery life varies by network environment, features and apps used, frequency of calls and messages, the number of times charged, and many other factors. Estimated against the average usage profile compiled by UX Connect Research. Independently assessed by UX Connect Research between 2025.06.12-2025.06.20 in US with pre-release versions of SM-F766 under default setting using LTE and 5G Sub6 networks. NOT tested under 5G mmWave Network.}

^{[10] AP performance improvements shown compared to Galaxy Z Flip6. Actual performance will depend on user environment, conditions and pre-installed software and applications.}

^{[11] Samsung Account login may be required to use certain AI features. Samsung does not make any promises, assurances or guarantees as to the accuracy, completeness or reliability of the output provided by AI features. Availability of Galaxy AI features may vary depending on the region/country, OS/One UI version, device model and phone carrier. Different terms may apply for AI features provided by third parties.}

^{[12] Some functional widgets may require a network connection and/or Samsung Account login. Availability of functions supported within the apps may vary by country.}

^{[13] Gemini is a trademark of Google LLC. Results for illustrative purposes. Gemini Live feature requires internet connection and Google Account login. Service availability may vary by country, language, device model. Features may differ depending on subscription and results may vary. Compatible with certain features and certain accounts. Currently, you can use a personal Google Account that you manage on your own, or a work or school account for which your administrator has enabled access to Gemini. You must be 13 (or the applicable age in your country) or over to use Gemini with a personal or school Google Account and 18 or over to use Gemini with a work account.}

^{[14] Boarding passes only available for selected airlines.}

^{[15] Availability of functions supported within the apps may vary by country. Some functional widgets may require a network connection and/or Samsung Account login.}

^{[16] Now Brief feature requires Samsung Account login. Service availability may vary by country, language, device model, apps. Some features may require a network connection. Modes and Routines need to be enabled to use Personal Data Engine for context-based Routines suggestions. User needs to consent to access permissions such as photos, videos, audio files, and calendar events. May not display moments depending upon exposure policy. The description of photos provided by moments may not align with the user’s intent. Events schedule notification is supported with calendar apps that utilize Android calendar database and available if Samsung Calendar is installed. Notifications for coupons only available for coupons added to Samsung Wallet with expiration date. To check the Energy Score, the health data tracked from Samsung Galaxy Watch or Samsung Galaxy Ring must be synchronised with the Samsung Health App. The result is for your personal reference only and is not intended for medical purposes.}

^{[17] Results may vary depending on light condition and/or shooting conditions including multiple subjects, being out of focus or moving subjects.}

^{[18] 50 MP resolution is available on Galaxy Z Flip7’s rear wide camera only.}

^{[19] AI Zoom is applied to distances between digital zoom lengths. Accuracy of results is not guaranteed.}

^{[20] Portrait Studio feature for Photo Assist requires a network connection and Samsung Account login. Editing with Portrait Studio results in a resized photo. A visible watermark is overlaid on the image output upon saving in order to indicate that the image is generated by AI. The accuracy and reliability of the generated output is not guaranteed.}

^{[21] Available on Galaxy smartphones and tablets with One UI 8 or later.}

^{[22] Secure Wi-Fi offers free protection of up to 1024MB per month for Android OS 13 or later, and 250MB per month for Android OS 12 or earlier versions. Availability details may vary by market or network provider and connectivity is subject to applicable network environments.} 

^{[23] Colour availability may vary depending on market, country or carrier.}

^{[24] Online exclusive colours only available on Samsung.com.}

^{[25] Terms and conditions apply. Samsung Care+ Screen Care coverage, service type and promotion details may vary by country/region and deductible (service fee) may apply. To be eligible for Samsung Care+ Screen Care promotion benefit, registration may be required. For detailed Samsung Care+ Screen Care information, please visit https://www.samsung.com/sg/offer/samsung-care-plus/}

^{[26] Google AI Pro is a trademark of Google LLC. Google AI Pro and Gemini for Gmail, Doxs, and more are only available for ages 18+. Gemini for Gmail, Docs and more is available in select languages. Rate limits may apply.}

The Samsung Bespoke AI WindFree Air Conditioners feature a ‘Good Sleep’ mode that promotes restful sleep by automatically adjusting the temperature according to different sleep stages. This mode has been recently upgraded to allow users to connect their air conditioners with their Galaxy Watch series and Galaxy Ring, allowing ‘Good Sleep’ mode to be automatically activated when they fall asleep.^[1]

The Effect of Temperature on Good Sleep

Ambient temperature plays a crucial role in sleep quality. Waking up in the middle of the night drenched in sweat or shivering due to the cold is a common and relatable experience for many people. This year, due to global warming, various regions across the globe experience unusual temperature patterns, with nights growing even warmer relative to days. As a result, numerous individuals struggled to get quality sleep, negatively impacting their daily routines and overall mood. Based on this observation, Samsung decided to develop a mode on its air conditioners to enable more suitable sleeping temperatures so that people get better sleep during the night.

The key insight behind this mode is that the optimal temperature for sleep isn’t consistent throughout the night. This is why although many set their air conditioner to the ‘optimal’ temperature before going to bed, their sleep still gets interrupted. It varies according to the sleep stage a person is at – whether a person is falling asleep, in deep sleep, or waking from sleep. The team, in 2015, partnered with Kyunghee University to find the optimal temperature for each sleep stage, and develop an adequate algorithm for the air conditioner.

How it Functions

The ‘Good Sleep’ cycle adjusts the indoor temperature at each of the 5 stages of sleep – wake, REM (Rapid eye movement), and 3 stages of NREM (Non-rapid eye movement sleep). Each stage of sleep includes variations in brain wave patterns, eye movements, and body temperature. First, when a person falls asleep, temperature is quickly lowered within 5 minutes to immediately create pleasant environment. The temperature is kept low consistently during the next 90 minutes to facilitate deeper sleep. Starting from 90 minutes, the air conditioner increases the temperature to prepare for the deeper stages of sleep – N2 and N3. During these stages, the external environment should be warmer as body temperature and blood pressure fall the most. Temperature is increased by up to two degrees above target level to prevent awakening due to cold sensation.

Throughout the eight-hour sleep cycle, alternating periods of lighter REM sleep and deeper NREM sleep occur. The ‘Good Sleep’ mode continually modifies the temperature throughout the night, adjusting it by approximately three times. Approaching the end of one’s sleep cycle, temperature is kept high, but gentle wind is blown to create a refreshing atmosphere.

Algorithm for Good Sleep Mode, under condition of Target temperature 24°C

In Bespoke AI WindFree Air Conditioners, ‘Good Sleep’ mode works on WindFree mode while for normal models, air is blown out via Fast Cooling to meet the target temperature.

Automation with Galaxy Wearables

By connecting the air conditioner with the Galaxy Watch series or Galaxy Ring^[2] via SmartThings, users can seamlessly enjoy the benefits of the ‘Good Sleep’ mode without requiring manual adjustments via remotes. Once configured, whenever the wearable detects that the user has begun sleeping, it initiates the ‘Good Sleep’ mode accordingly. If the air conditioner was previously turned off, it will be switched on at the appropriate target temperature for ‘Good Sleep’. Alternatively, if it is already running but at too cold a temperature, it will adapt to a more comfortable sleeping temperature.

Samsung first attempted this connection back in 2018, before wearables had developed into the steady market of today. Members of the product planning team and software team pioneered the collaboration of wearables and home appliances. However, it was only in 2023 when this service properly became a feature. By then, the wearable market itself had grown, and it had matured enough that users even wore the devices to bed. Kyungju Lee, who took part in the project 6 years ago and now leads product planning for Room Air Conditioners, says, “We could see just by looking at friends and family around us, that the interest people had in the quality of their sleep had increased immensely. We felt that we needed to re-launch the feature we’d attempted in 2018. The right timing had come.”

For more details on the Bespoke AI WindFree air conditioners, visit https://www.samsung.com/sg/air-conditioners/windfree/

^{[1] Available for Room Air Conditioners – AR**B******, AR**C******, AR**D******, AR**F****** with Wi-Fi. Requires mobile phones above Galaxy S22, and wearable devices above Galaxy Watch4 series or Galaxy Ring. Must download SmartThings/Wearable/Samsung Health apps available on Android and iOS devices. A Wi-Fi connection and a Samsung account are required. Devices must be signed in with the same Samsung account.}

^{[2] Possible through models above Galaxy Watch4 series and Galaxy Ring}

HPSSC’s Michigan Performance Research Laboratory (MiPR) found a significant correlation between Galaxy Watch and the clinical and sport science reference devices’ measurement of heart rate, sweat loss, VO₂ max and body fat percentage measurements, validating the reliability of Galaxy Watch’s monitoring capabilities. This partnership demonstrates how the collaboration between the two organisations makes advanced and precise fitness solutions to more people.

The MiPR studies verified the accuracy of Galaxy Watch’s fitness tracking features by monitoring key metrics from elite runners, including:

• Heart rate: As the most commonly checked health metric during workouts, heart rate measures how hard the heart works during physical activity. Findings show an excellent 90% correlation with electrocardiogram equipment while running, the gold standard in heart rate measurement.
• Sweat loss: Sweat loss estimates the amount of fluid lost during physical activity and helps guide proper hydration after workouts. The study found a 95% correlation for Galaxy Watch in assessing sweat loss over varying distances ranging from 2.5 km to 20 km.
• VO₂ max: Understanding how much oxygen the body absorbs during a workout helps individuals assess their fitness levels and set optimal goals and limits. The study demonstrated an 82% correlation, indicating acceptable alignment between Galaxy Watch and clinical-grade diagnostic equipment.
• Body fat percentage: Measuring a person’s body fat percentage allows for a better understanding of physical health and fitness than tracking body weight alone. Galaxy Watch readings showed a 95% correlation with dual-energy X-ray absorptiometry (DEXA) results, the standard diagnostic test for body composition using low-dose X-rays.

“We’re proud to be recognised by the renowned Michigan Performance Research Laboratory — their skilled researchers and expertise in wearable technology give us confidence in the accuracy of the Galaxy Watch’s fitness tracking capabilities,” said Dr. Hon Pak, Senior Vice President and Head of Digital Health Team, Mobile eXperience Business at Samsung Electronics. “We are committed to delivering precise and insightful fitness tracking experiences through strategic partnerships and advanced research.”

“Our partnership with Samsung exemplifies the power of combining industry-leading expertise with pioneering independent research at the academic level,” said Co-PIs Adam Lepley, MiPR director and associate director of HPSSC research. “Together, we can advance scientific discovery and provide information back to consumers that will enhance the use of Samsung’s technology. This synergy underscores the power of uniting academic excellence with industrial innovation, and we are grateful for this collaboration.”

“We are excited to continue our partnership with Samsung to ensure that innovations in wearable technology are accessible and accurate across all segments of the population,” said Kenneth Kozloff, HPSSC co-director. “HPSSC and MiPR are eager to unveil these outstanding outcomes that solidify our commitment to enhancing heart rate and health monitoring and are look forward to future collaborations.”

The following tips can enhance your fitness journey with the Galaxy Watch series, from setting personal goals to post-workout recovery:

• Body composition^[1]: Get a comprehensive snapshot of your body, including body fat percentage, body water content and skeletal muscle mass. Set personalised goals based on your current body status and track your progress.
• Personalised heart rate zone: Creating a personalised heart rate zone tailored to your activities allows you to align your health and wellness objectives, and train at optimal intensity levels according to your physical capabilities.
• VO₂ max^[2]: Gain deeper insight into your fitness levels by analysing how much oxygen your body uses during physical activity. VO₂ max is widely regarded as the best indicator of cardiovascular endurance.
• Sweat loss: After a run, measure your sweat loss and re-hydrate appropriately after each workout based on data​ for improved recovery.

^[1] Body Composition is only supported in Samsung Galaxy Watch4 series and later released Galaxy Watch models. Body Composition should not be used if you have an implanted pacemaker or other implanted medical devices, or if you are pregnant. Any health-related information accessed through the device and application should not be treated as medical advice. Measurement results may not be accurate if you are under 20 years old. The measurements are for your personal reference only. Please consult a medical professional for advice.

^[2] Accurate VO2 max reading requires running outdoors for at least 20 minutes with GPS on; consult user manual before use.