Amazfit T-Rex 3 (48 mm) / Apple Watch Series 10 (46 mm, GPS, aluminium)

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.

Apple Watch Series 10 (46 mm, GPS, aluminium): 46 mm aluminium case, GPS only (no cellular); Jet Black, Rose Gold and Silver. The 42 mm case, GPS + Cellular and titanium versions differ in weight, materials and connectivity.

SpecificationAmazfit T-Rex 3 (48 mm)Apple Watch Series 10 (46 mm, GPS, aluminium)
Release year20242024
Display1.5-inch AMOLED, 480 × 480 pixels, 322 ppi; Gorilla Glass touchscreen

There is also a night display mode.

Amazfit		LTPO3 OLED Always-On Retina, wide-angle OLED; 416 × 496 pixels, 326 ppi; 1220 mm² display area

Up to 2000 nits and down to 1 nit. Apple says the wide-angle OLED looks up to 40% brighter when viewed at an angle, making the watch easier to read without raising the wrist.

Apple
Case and strap48.5 × 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		—
Weight68.3 g (without strap) Amazfit—
Water and diving10 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		—
Battery700 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 navigationDual-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		—
SensorsBioTracker 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		—
ConnectivityBluetooth 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 health170+ 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		—
CompatibilityAndroid 7.0 and later, iOS 14.0 and later; Zepp app AmazfitiPhone Xs or later with iOS 18 or later (including iPhone SE 2nd generation or later)

An iPhone is required for setup and use; it does not work with Android phones.

Apple
Case—46 mm aluminium; Ion-X front glass

The aluminium version uses Ion-X glass; the titanium versions have sapphire crystal.

Apple
Chip and storage—S10 SiP; 64-bit dual-core processor, 4-core Neural Engine; 64 GB storage Apple
Health and motion sensors—Electrical heart sensor; third-generation optical heart sensor; blood oxygen sensor; temperature sensor; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensor

The electrical sensor enables ECG recordings and the optical sensor continuous heart rate. Availability of health features varies by country.

Apple
Water and dust—50 m water resistance (WR50, ISO 22810:2010); IP6X dust; depth gauge and water temperature sensor

Suitable for shallow-water activities such as swimming, not for scuba diving or high-velocity water sports. The depth gauge is for snorkelling down to 6 metres.

Apple
Connectivity and location—Wi-Fi 4 (802.11n); Bluetooth 5.3; second-generation Ultra Wideband; L1 GPS, GLONASS, Galileo, QZSS, BeiDou

This version has no cellular connection, so calls and data away from the phone need Wi-Fi. Location uses only the L1 band; there is no dual-frequency GPS.

Apple
Battery and charging—Up to 18 hours normal use, up to 36 hours in Low Power Mode; about 80% in around 30 minutes with fast charging

Fast charging uses the included magnetic fast charger to USB-C cable; the adapter is sold separately.

Apple
Size and weight—46 × 39 × 9.7 mm; 36.4 g (without band) Apple