Garmin Fenix 8 AMOLED Sapphire 47mm

The Garmin Fenix 8 AMOLED Sapphire 47mm features a 1.4″ OLED/AMOLED touchscreen with a resolution of 454 x 454 px and a pixel density of 458 ppi, protected by sapphire glass rather than branded damage-resistant glass. The always-on display keeps information visible at all times, while the watch body measures 47 mm in height and width with a thickness of 13.8 mm, weighing 73 g in total. It carries a 10 ATM rating with a waterproof depth of 100 m, and while it is noted as sweat resistant, it does not include a perspiration monitor at the hardware level. The 22 mm watch band is replaceable, and the watch operates across a temperature range of -20 °C to 45 °C, with a total volume of 30.4842 cm³.

The watch includes a broad range of built-in sensors, covering GPS, a heart rate monitor, and a pulse oximeter for blood oxygenation tracking, alongside a barometer, accelerometer, gyroscope, compass, body temperature sensor, and a wind speed sensor. It does not include a cadence sensor or a perspiration monitor.

The watch covers a wide range of activity tracking functions, including route tracking, distance, pace, elevation, and step counting, along with automatic activity detection and exercise tagging. Multi-sport mode is supported, and the watch is specifically designed for both diving and golf, while also featuring a swim stroke counter. Sleep tracking is included and paired with detailed sleep reports, and the watch additionally monitors calorie intake and supports trackback mode for retracing a route.

The watch is compatible with both iOS and Android and connects wirelessly via Wi-Fi, NFC, and ANT+. It does not include a cellular module, so an independent mobile connection is not supported.

The watch runs on a built-in rechargeable battery that is neither removable nor wirelessly charged, and it does not feature solar charging. In everyday use, the battery lasts up to 16 days, dropping to 47 hours with GPS active and 35 hours in training mode.

On the health monitoring side, the watch tracks HRV, VO2 max, and resting heart rate, and delivers fast and slow heart rate notifications, irregular heart rate warnings, and a readiness and recovery score. It supports Galileo for satellite positioning with a fast GPS lock, and includes 32 GB of internal storage along with the ability to upload maps. For everyday utility, it offers wrist notifications, call control, the ability to answer calls via a single built-in microphone, vibrating alerts, a silent alarm, a stopwatch, a phone finder, sunrise and sunset times, and thunderstorm risk alerts. Fall detection is also included. The watch does not support voice commands, a smart alarm, or a camera remote shutter function, and it carries a one-year warranty.

The companion app is free and ad-free, though an account is required to use it. It covers a wide range of tracking features including calories burned, weight, BMI, water intake, and temperature, alongside activity reports, an exercise diary, inactivity alerts, and goal setting with achievements. Live tracking, route support, and integrated maps are all included, and the app can sync with existing calendars and supports widgets and personalisation. Coaching, voice feedback, music playback, and video tutorials are also available. On the women's health side, the app provides period notifications, fertile window notifications, ovulation prediction, and start date prediction. A barcode scanner is not supported, and the app does not include a barcode scanning feature for food logging.

The watch displays a battery level indicator and includes auto pause for activity tracking. It is compatible with Windows, Mac OS X, and available on PC, and works with external heart rate monitors and smart scales. There is no external memory slot and no 3.5 mm audio jack.