Garmin fēnix 8 Pro 47 mm AMOLED / Amazfit T-Rex 3 (48 mm)

Garmin fēnix 8 Pro 47 mm AMOLED: 010-03198-11 · sapphire, titanium; Graphite/black silicone band

Amazfit T-Rex 3 (48 mm): 48.5 mm case, 1.5-inch AMOLED; Onyx (black), Lava and Gray colours. The T-Rex 3 Pro, T-Rex 2 and the T-Rex Ultra 2 are separate models.

SpecificationGarmin fēnix 8 Pro 47 mm AMOLEDAmazfit T-Rex 3 (48 mm)
Release year20252024
Announcement and availabilityAnnounced September 3, 2025; on sale from September 8, 2025 Garmin—
Display1.4-inch AMOLED, 454 × 454; touchscreen Garmin1.5-inch AMOLED, 480 × 480 pixels, 322 ppi; Gorilla Glass touchscreen

There is also a night display mode.

Amazfit
LensSapphire Garmin—
Bezel and rearTitanium Garmin—
Dimensions47 × 47 × 16 mm Garmin—
Weight77 g with band Garmin68.3 g (without strap) Amazfit
Storage32 GB internal storage for maps and music Garmin—
Smartwatch battery lifeGesture display: up to 15 days; always-on: 8 days Garmin—
GPS battery lifeGPS only: up to 44 hours; 33 hours with always-on display Garmin—
Multi-band battery lifeAll systems + multi-band: up to 30 hours; 23 hours always-on Garmin—
LTE LiveTrack battery lifeAll systems + multi-band + LTE LiveTrack: up to 12 hours; 11 hours always-on

Manufacturer scenarios; enabled features change actual runtime.

Garmin		—
CommunicationSatellite messages/location; LTE Messenger calls and LiveTrack

Active inReach subscription and service coverage required.

Garmin		—
AudioBuilt-in microphone and speaker Garmin—
FlashlightWhite/red LED flashlight Garmin—
Water and diving10 ATM; recreational diving features to 40 m

A 10 ATM rating does not authorize diving to 100 m.

Garmin		10 ATM; freediving to 45 metres (147 ft) certified to EN 13319, ISO 6425 and GB/T 18828

10 ATM means withstanding the pressure of 100 metres of still water for up to 10 minutes. Breath-hold training and testing are downloaded through the Zepp app.

Amazfit
TemperatureOperating: −20–45 °C; charging: 0–45 °C Garmin—
Case and strap—48.5 × 48.5 × 13.75 mm; stainless-steel bezel, polymer middle frame; 4 buttons; 22 mm liquid-silicone strap for 145–210 mm wrists

The 22 mm strap is a standard width and can be swapped.

Amazfit
Battery—700 mAh; 27 days typical, 13 days heavy use, 40 days battery saver, 81 days clock mode; 42 hours in accuracy GPS mode, 72 hours power-saving GPS, 180 hours maximum GPS mode

A full charge takes about 3 hours; a magnetic charging base is in the box but no USB-C cable. Low-temperature mode gives 28 hours with GPS on and 32 days with it off. The maximum GPS mode works only in hiking and climbing modes.

Amazfit
Positioning and navigation—Dual-band and single-band modes; 6 satellite systems; offline maps, turn-by-turn directions, route import, back-to-start and off-route alerts

Dual-band positioning receives two frequencies from the satellites to reduce drift from reflected signals among tall buildings and dense trees; it uses more battery. Automatic mode switches settings based on signal strength.

Amazfit
Sensors—BioTracker 6.0 PPG biometric sensor; accelerometer, gyroscope, magnetometer, barometric altimeter, ambient light, temperature sensor

The watch offers an altitude assistant, storm alerts, compass, sunrise/sunset and tide information, and prompts for blood-oxygen readings at high altitude.

Amazfit
Connectivity—Bluetooth 5.2 (BLE), 2.4 GHz Wi-Fi; microphone; music storage

Wi-Fi is used to download software updates without the phone. The watch shows incoming calls but cannot take Bluetooth calls; quick reply works on Android only.

Amazfit
Sports and health—170+ sports modes (177 listed); recognition of 25 strength and 8 sports movements; 24-hour heart rate, blood oxygen and stress; sleep stages; PAI; Zepp Coach

Chest straps, running/cycling power meters and cycling speed/cadence sensors can be paired; data can be exported to apps such as Strava, komoot and Apple Health.

Amazfit
Compatibility—Android 7.0 and later, iOS 14.0 and later; Zepp app Amazfit