The Garmin Fenix 8 Solar is a multisport GPS smartwatch for outdoor use. It has a Power Sapphire solar lens that charges the watch from daylight, a scratch-resistant sapphire lens, and a titanium bezel. The case is rated to 10 ATM with a 40-meter dive rating. It has leakproof metal buttons and a metal sensor guard cover, and it has been tested to U.S. military standards for thermal, shock and water resistance.
The memory-in-pixel (MIP) display stays readable in direct sunlight and responds to touch and buttons. A built-in LED flashlight helps with visibility after dark. When the watch is paired to a smartphone, the built-in speaker and mic let you make and take calls from your wrist. Built-in ABC sensors and preloaded TopoActive maps support trail use. Round-trip routing lets you set a target distance and get turn-by-turn directions back to your start.
The watch tracks heart rate, respiration, stress and sleep around the clock. Body Battery estimates your energy reserves through the day. Training readiness gives a daily score based on sleep, recovery and recent training load. Recovery time shows how long to wait before the next hard workout. Garmin Coach offers adaptive or prebuilt training plans with daily suggested workouts, and Up Ahead shows aid stations during a race.
- Case sizes
- 47 mm and 51 mm
- Finishes
- Carbon gray DLC titanium, or titanium with an amp yellow and graphite band, in each size
- Display
- MIP, touchscreen plus buttons; 1.3 in. (47 mm) or 1.4 in. (51 mm)
- Resolution
- 260 pixels across (47 mm) or 280 pixels across (51 mm)
- Lens
- Power Sapphire solar-charging lens
- Bezel
- Titanium
- Depth
- 15.2 mm (47 mm) or 15.4 mm (51 mm)
- Weight
- 80 g (47 mm) or 95 g (51 mm); case only 57 g or 67 g
- Smartwatch battery
- Up to 28 days (47 mm) or 48 days (51 mm) with solar charging, assuming all-day wear with 3 hours a day outside in 50,000 lux
- GPS battery
- Up to 92 hours (47 mm) or 149 hours (51 mm) with solar, assuming continuous use in 50,000 lux
- Water rating
- 10 ATM; 40-meter dive rating
- Durability
- Tested to U.S. military standards for thermal, shock and water resistance; leakproof metal buttons
- Sensors
- Built-in ABC sensors; 24/7 heart rate, respiration, stress and sleep monitoring
- Maps
- Preloaded TopoActive maps
- Light
- Built-in LED flashlight
- Calls
- Built-in speaker and mic; requires a paired smartphone
- Smart features
- Garmin Pay (supported country and payment network required), smart notifications (compatible smartphone required), music storage (subscription may be required), Garmin Messenger app
- Training tools
- Garmin Coach, training readiness, recovery time, Body Battery, Up Ahead, round-trip routing