Samsung Galaxy Watch Ultra

The Samsung Galaxy Watch Ultra features a 1.5″ OLED/AMOLED touchscreen with a resolution of 480 x 480 px and a pixel density of 327 ppi, complemented by an always-on display mode and sapphire glass protection — though it does not use branded damage-resistant glass. The watch measures 47.4 × 47.4 mm with a thickness of 12.1 mm and weighs 60.5 g, giving it a volume of 27.185796 cm³. It is fully waterproof with an IP68 rating, a 10 ATM water resistance rating, and a waterproof depth of 100 m. The watch band is replaceable, and the device supports a maximum operating temperature of 55 °C, a minimum of -20 °C, and a maximum altitude of 29,527 feet. It is not designed for children.

The watch includes a comprehensive sensor array covering the core needs of health and navigation tracking. It features a heart rate monitor and a pulse oximeter for continuous cardiovascular and blood oxygenation monitoring, alongside a body temperature sensor for thermal tracking. Motion and orientation are handled by an accelerometer, gyroscope, and compass, while a barometer adds atmospheric pressure sensing. Built-in GPS enables location and route tracking without relying on a paired device. The watch does not include a cadence sensor or a perspiration monitor.

The watch covers a wide range of activity tracking capabilities, monitoring steps, distance, pace, and elevation during workouts, while a route tracker logs movement paths in real time. Multi-sport mode and automatic activity detection allow it to handle varied exercise types without manual input, and exercise tagging lets users label specific sessions for better organization. For swimmers, it includes a stroke counter, though the watch is not designed for diving. Sleep tracking is supported alongside detailed sleep reports, and daily wellness is further rounded out by calorie intake tracking. Food tracking and calorie monitoring are both available, giving users a broader picture of their overall activity and nutrition patterns.

The watch includes a cellular module with a single eSIM slot, allowing it to operate independently of a paired phone for calls and data. It connects via Bluetooth 5.4 and supports both Wi-Fi 4 (802.11n) and Wi-Fi 5 (802.11ac) for wireless network access. NFC is built in for contactless interactions, and Galileo satellite support broadens location accuracy. The watch is compatible with Android devices only — iOS is not supported — and it does not support ANT+.

The watch is powered by a 590 mAh rechargeable battery that delivers up to 4 days of typical use, extending to 100 hours when power save mode is active. Charging is handled wirelessly, so no cable connection is required. The battery is not removable, and the watch does not feature solar charging.

On the health monitoring side, the watch tracks HRV, resting heart rate, and VO2 max, and provides a readiness and recovery score to reflect daily physical state. ECG technology is built in alongside irregular heart rate warnings and fast/slow heart rate notifications, covering a broad range of cardiac tracking needs. Safety features include fall detection, silent alarm, and vibrating alerts, while a stopwatch is also available; a smart alarm is not supported. For daily convenience, the watch handles wrist notifications, call answering, call control, phone locating, voice commands, and a camera remote shutter function. It also includes fast GPS lock for quicker location acquisition. Hardware-wise, it comes with 2 GB of RAM and 32 GB of internal storage, and it does not have a front camera.

The companion app is free and ad-free, and supports a high degree of personalisation including widgets, goal setting, achievements, and calendar syncing. Fitness management is well covered through an exercise diary, activity reports, calorie burn tracking, inactivity alerts, coaching, voice feedback, music playback during workouts, and route and map support. Wellness tracking extends to water intake, weight, BMI, and temperature, while reproductive health features include period notifications, fertile window notifications, ovulation prediction, and cycle start date prediction. Food logging is available via a food diary, though a barcode scanner is not included in the app. Routes and maps are both supported, rounding out a broad software feature set suited to both everyday health monitoring and structured fitness use.

The watch includes a battery level indicator, auto pause for workout tracking, and passcode protection for security. It is compatible with smart scales and external heart rate monitors, expanding its ecosystem for users who rely on additional fitness hardware. On the compatibility side, it does not support Windows or Mac OS X, and there is no external memory slot or 3.5 mm audio jack.