Samsung's Latest Galaxy Watch Ultra2 Partners with Mares to Deliver Professional Dive Logging and Underwater Safety

As the wearable device market continues its rapid expansion, smartwatches have evolved from everyday health monitoring into companions for a wide range of outdoor sports. Samsung has officially unveiled its all-new flagship wearable, the Galaxy Watch Ultra2, and the biggest highlight this time around is firmly in the recreational diving arena. Not only is it certified to IP69K and EN13319 international diving standards (supporting underwater depths of up to 40 m), Samsung has also partnered with global dive giant Mares to seamlessly integrate professional-grade dive logging and data recording into a smartwatch!

1. An Underwater Partner for Divers: Deep Mares App Integration and Underwater Safety Guidance

For divers, accurate underwater data and safety alerts are absolutely critical. Through an exclusive app developed in collaboration with Mares, the Galaxy Watch Ultra2 transforms what was once a cumbersome logging process into an intelligent experience:

1. Dive Speed Control: Dynamically tracks a diver's descent and ascent rates, helping to prevent the risk of decompression sickness (DCS) caused by ascending too quickly.
2. NDL Guide: Displays no-decompression limit (NDL) time in real time, helping divers precisely plan their bottom time at various depths.
3. Safety Stop Guidance: Provides clear, intuitive safety stop prompts during ascent to ensure the standard decompression procedure is completed.

After a dive, divers can sync maximum depth, dive time, water temperature changes, and dive track to their phone via the Mares App, building a comprehensive digital dive log.

2. Extreme Hardware Specs Engineered for Diving and the Outdoors

• 5,000 nits peak display brightness: Data remains clearly visible even in dim underwater conditions or under harsh surface sunlight.
• Lightweight titanium body: Thickness reduced by 12% and band weight reduced by 26%, significantly improving wearing comfort and underwater agility.
• Dual international certifications: IP69K and EN13319 professional diving standards bring comprehensive upgrades in durability and water resistance.

3. All-Terrain Trail Features for Land and Sea

Beyond its underwater capabilities, the Galaxy Watch Ultra2 also supports a range of outdoor trail and adventure features:

• GPX offline maps and Real-time Route Navigation
• Uphill Climb Guidance to help pace energy expenditure
• Hydration Alert and cycling cadence / power measurement

4. 24-Hour Continuous Physiological Monitoring

The Galaxy Watch Ultra2 introduces an all-new continuous physiological assessment system, helping athletes and adventurers manage their physical condition with science-backed data:

• Five vital signs integrated assessment: Integrates heart rate, heart rate variability (HRV), blood oxygen, body temperature, and respiration rate into a composite index, allowing users to track daily health changes at any time before or after a dive.
• Personalised fitness power profile: Calculates average scores across five categories — cardio, endurance, strength, body composition, and mobility — and presents them as intuitive charts for an at-a-glance overview of physical condition.
• Cardiovascular health and environmental alerts: Calculates a score based on sleep, exercise, BMI, and cardiovascular load; a built-in noise detection alert proactively reminds users to protect their hearing when ambient sound levels are too high; sleep features have also been upgraded to include sleep apnea risk analysis.
• Compass multi-point coordinate tracking and recovery suggestions: During outdoor activities, the compass gains a location-marking function to record multiple waypoints and their coordinates en route, making return navigation more precise; daily cardio load is calculated from everyday activities and exercise to provide personalised recovery suggestions for the day.

5. AI Voice Assistant and Full Hardware Upgrade: Gemini and an 800mAh Flagship Battery

In the demanding environments of the ocean or the outdoors, intuitive and rapid control can make a significant difference to both safety and convenience. The Galaxy Watch Ultra2 combines new hardware with an AI voice assistant to deliver a truly capable on-the-go smart companion:

• Raise your wrist to wake Gemini Intelligence: Powered by Gemini AI, there is no need to reach for your phone during sport or movement — simply raise your wrist and speak to carry on a natural conversation, send messages, set reminders, navigate a route, or ask about meal calories and workout advice, all across apps.
• Air Pocket cushioned band: The all-new Air Pocket band reduces band weight by 26%, delivering a softer, more conforming fit that greatly improves all-day wearing comfort and the accuracy of sleep and heart rate monitoring.
• High-performance chip: Powered by the Qualcomm SDW6100 high-performance chip, overall performance sees a further upgrade, maintaining smooth and stable operation across activity tracking, navigation, and multitasking.
• 800mAh flagship battery and exceptional endurance: Battery capacity has been boosted from 590mAh to 800mAh (a 35% increase in usage time compared to the previous generation), delivering up to 20 hours of GPS endurance and up to 16 hours of GPX route recording — dramatically easing battery anxiety across multi-day dive trips and extended backcountry expeditions!

The Samsung Galaxy Watch Ultra2 is not just an all-around health smartwatch — it is a piece of professional equipment purpose-built for outdoor and water sports enthusiasts. With EN13319 professional diving certification, a 5,000 nits high-brightness underwater display, deep underwater data integration via the Mares App, and a multi-day battery life courtesy of its 800mAh cell, it is without doubt a flagship choice that combines smart convenience with professional safety for both everyday life and recreational pursuits.

Further Reading

• Galaxy Watch Ultra2