Samsung Electronics Co., Ltd. has announced the availability of the One UI 8 Watch update^[1] for Galaxy Watch Ultra, unlocking the motivational health features and refined, intuitive interface unveiled with the new Galaxy Watch8 series to a wider range of Galaxy users. With the update, Galaxy Watch Ultra users now have access to powerful tools^[2]  like Running Coach, Vascular Load, Antioxidant Index, Bedtime Guidance, and High Stress Alert – all designed to help users build healthier habits through motivational insights.

With One UI 8 Watch, the user interface is optimised to deliver essential information at a glance on a smartwatch-sized screen. Multi-Info Tiles pull everything from health metrics to weather into a customisable view, delivering the information users need, exactly when they need it. Now Bar^[3]  ensures that whatever users are working on is always accessible. These One UI 8 Watch features integrate seamlessly with Galaxy Watch Ultra’s robust performance and durability.

Galaxy Watch Ultra remains the ultimate wearable companion for those who love outdoor adventure, all available in four stunning titanium finishes – including the newly introduced Titanium Blue. Meanwhile, Galaxy Watch8 is designed for everyday wellness with comfort and style, while Galaxy Watch8 Classic offers timeless sophistication paired with advanced functionality. The Galaxy Watch8, Galaxy Watch8 Classic and Galaxy Watch Ultra in Titanium Blue are available now for purchase at Samsung.com and in stores.

For more details about the Galaxy Watch Ultra, visit https://www.samsung.com/galaxy-watch/.

^[1]Terms & Conditions apply. Offer excludes monitors and air conditioners. One UI 8 Watch update will be progressively rolled out to previous Galaxy Watch models. All functionality, features, specifications and other product information provided in this document including, but not limited to benefits, design, pricing, components, performance, availability, and capabilities of the product are subject to change without notice.

^[2]Terms & Conditions apply. Offer excludes monitors and air conditioners. Availability and features may vary depending on market, model and the smartphone paired; visit https://www.samsungmobilepress.com/feature-stories/great-health-can-happen-overnight-with-galaxy-watch for details. Not intended for use in detection, diagnosis, treatment of any medical condition. The result is for your personal reference only. Please consult a medical professional for advice.

^[3]Terms & Conditions apply. Offer excludes monitors and air conditioners. Availability of functions supported within the apps may vary by market. Some functional widgets may require a network connection and/or Samsung Account login.

Powered by Samsung’s cutting-edge sensor technology that provides a holistic, real-time overview of many aspects of our health, the new Galaxy Watch8 series^[1] shifts the focus to preventative care. It provides clear, actionable insights based on your lifestyle patterns to help you understand your body and mind more deeply, build healthy habits and help identify silent threats such as ectopic beats early on.

▲The Galaxy Watch8 series’ Antioxidant Index allows you to monitor your antioxidant intake by measuring carotenoid levels in the skin.

Preventative Care Through Early Detection

With new heart metrics, Galaxy Watch8 series spots the potential for several health issues sooner, so you can prevent them before they start:

• Ectopic Beat Detection: Galaxy Watch8’s enhanced Electrocardiogram (ECG)^[2] can better capture ectopic beats – premature heartbeats that often go undetected in routine checkups as they frequently occur without noticeable symptoms. It is well known that frequent ectopic beats can be considered clinically significant and may lead to arrhythmias that drive up stroke and heart-failure risk. Galaxy Watch8 series provides enhanced ECG measurement with the ability to differentiate instances of frequent ectopic beats providing earlier insights to support preventive care.

• Vascular Load: While you sleep, Galaxy Watch8 reads Photoplethysmogram (PPG) waveforms – optical signals associated with blood flow during sleep. It measures blood volume and vascular stiffness and precisely analyses changes in stress on blood vessels. Because diet, stress, and rest all affect this metric, regular monitoring shows which habits to fine-tune and helps you cut cardiovascular risk before it takes hold.

Lifestyle Changes Motivated by Sensor-Driven Insights

The Galaxy Watch8 series’ advanced sensor now gives you more immediate insights for your nutrition and sleep patterns to steer you towards lasting, sustainable habits:

• Antioxidant Index: Because lifestyle often outweighs genetics, the Galaxy Watch8 series shines a light on your daily choices. The BioActive Sensor measures skin carotenoids in five seconds using multi-wavelength absorption spectroscopy. After analysing these carotenoids, an antioxidant which reflects fruit and vegetable intake, you are given a score of 0–100, which is categorised into one of three levels. This score shows how diet, UV light, alcohol and stress are impacting your antioxidant levels. With insufficient fruit and vegetable intake linked to major health risks, this non-invasive metric offers meaningful insight, promotes healthier choices and adds another layer of prevention to your daily routine.

• Bedtime Guidance: Leveraging the science behind the two-process model of sleep regulation, the Galaxy Watch8 series tracks your circadian rhythm (internal body clock) and sleep pressure (how much your body needs sleep), over three days. It then interprets this data as a differential equation to calculate the optimal bedtime for waking up refreshed. The algorithm uses changes in sleep threshold and individual sleep needs throughout the day to deliver personalised guidance. Developed by KAIST and clinically tested at Samsung Medical Center, this feature helps build healthier sleep routines that lead to deeper, less interrupted sleep and more energised mornings.

Pioneering the Next Era of Preventative Care

Samsung’s sensor innovation is setting a new standard for preventative care. The Galaxy Watch8 series helps unify your patterns, expose hidden risks, and deliver real-time actionable insights so you can safeguard your health in advance. Samsung is not only redefining what a smartwatch can do today, but also accelerating the next wave of preventative-care breakthroughs for tomorrow.

^[1] Availability and features may vary depending on market, model and the smartphone paired; visit https://www.samsungmobilepress.com/feature-stories/great-health-can-happen-overnight-with-galaxy-watch for details. Not intended for use in detection, diagnosis, treatment of any medical condition. The result is for your personal reference only. Please consult a medical professional for advice.

^[2] The ECG feature is only available in select markets. It is not intended to replace traditional methods of diagnosis or treatment. The feature is not intended for users with known arrhythmias other than AFib. Users should not interpret or take clinical action based on the device output without consultation with a qualified healthcare professional.