Aug 9, 2026
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The Samsung Galaxy Watch 9 offers robust health and exercise tracking, though it currently provides a high volume of data without an integrated AI coach.

ManyPress

ManyPress

ManyPress Editorial

2 min readSource:ZDNET AI
Samsung Galaxy Watch 9 Review: Health Tracking and Future Integration

Key facts

  • The watch features a 3,000-nit super AMOLED display.
  • Battery life reached approximately 36 hours and 30 minutes in testing.
  • The device runs on Google's Wear OS 7 and Samsung's One UI 9 Watch.
  • New health metrics include Heart Health Score, Fitness Index, and Daily Cardio Load.
  • The watch is designed to integrate with future Samsung smart glasses via gesture and voice activation.

The Samsung Galaxy Watch 9 features a new processor, expanded health metrics, and improved battery life on the 40mm model. While not a radical departure from previous generations, the device is positioned as a functional smartwatch for first-time buyers and a potential hub for future AI-powered wearables, including upcoming smart glasses.

By the numbers

3,000-nit
screen brightness
36 hours and 30 minutes
tested battery life
390 mAh
battery capacity
1 hour and 20 minutes
recharge time from 0%

Health and Fitness Performance

The watch includes features such as Heart Health Score, Fitness Index, and Daily Cardio Load, running on Google's Wear OS 7 and Samsung's One UI 9 Watch. Testing showed high accuracy in heart rate monitoring, with results within 3 beats per minute of a Polar H10 chest strap during exercise. The device also tracks biomarkers like blood oxygen, respiration rate, and heart rate variability to monitor for health deviations.

Battery and Design Considerations

The Galaxy Watch 9 provides approximately 36 hours of battery life, though recharging from 0% takes about one hour and 20 minutes. The device features a 3,000-nit super AMOLED screen. Some users may find the included silicon band uncomfortable for 24/7 wear, as it can feel heavy and lacks sufficient breathability.

Future Ecosystem Integration

Samsung is developing the watch to serve as a central component for future smart glasses. The watch is designed to record gestures and provide voice activation for these glasses, which are expected to summarize, translate, and contextualize information for the wearer.

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This article was independently rewritten by ManyPress editorial AI from reporting originally published by ZDNET AI.

Artificial Intelligence