Amazfit T-Rex Ultra 2 / Amazfit T-Rex 3 (48 mm)

Amazfit T-Rex Ultra 2: A2550 · 51 mm · Black Magma · silicone strap

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.

SpecificationAmazfit T-Rex Ultra 2Amazfit T-Rex 3 (48 mm)
Release year20262024
Announcement / availability19 February 2026 Amazfit—
Display1.5-inch AMOLED · 480 × 480 · sapphire glass Amazfit1.5-inch AMOLED, 480 × 480 pixels, 322 ppi; Gorilla Glass touchscreen

There is also a night display mode.

Amazfit
Peak brightnessUp to 3000 nits

With auto brightness; unavailable in low-temperature mode or below 30% battery.

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BodyPolymer case; Grade 5 titanium bezel, buttons and back Amazfit—
Size / weight51 × 51 × 14.3 mm; 89.2 g with strap

Thickness excludes heart-rate sensor base.

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Strap26 mm silicone; 145–215 mm wrist Amazfit—
Storage64 GB total; up to 26.7 GB user space Amazfit—
PositioningDual-band GNSS; six satellite systems Amazfit—
SensorsBioTracker 6.0 PPG; barometer, compass, motion and temperature sensors AmazfitBioTracker 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
Battery870 mAh; up to 30 typical / 15 heavy / 10 AOD days

Separate manufacturer scenarios, not continuous GPS endurance.

Amazfit		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
GPS battery modesUp to 50 Accurate / 90 saving / 177 max-battery hours Amazfit—
WirelessBluetooth 5.2 BLE; 2.4 GHz Wi-Fi Amazfit—
Water / diving10 ATM; recreational diving up to 45 m

Not for technical, cave or mixed-gas diving.

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Phone connectionAndroid 7+ / iOS 15+; Zepp app Amazfit—
ChargingMagnetic charging puck; USB-C cable separate Amazfit—
CallsBluetooth calls using microphone/speaker Amazfit—
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
Weight—68.3 g (without strap) Amazfit
Water and diving—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
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
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