Smartwatches · 2024 · Amazfit
Amazfit T-Rex 3 (48 mm)
The T-Rex 3 is Amazfit’s rugged smartwatch for mountain and outdoor use. It offers dual-band positioning, offline maps, freediving certification to 45 metres and up to 27 days of battery in typical use. Owners praise the battery life, maps and GPS most; readability in sunlight, Bluetooth dropouts with iPhones and the bulky case draw criticism.
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.
Specifications
| Specification | Value |
|---|---|
| Display | 1.5-inch AMOLED, 480 × 480 pixels, 322 ppi; Gorilla Glass touchscreen |
| 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 |
| Weight | 68.3 g (without strap) |
| Water and diving | 10 ATM; freediving to 45 metres (147 ft) certified to EN 13319, ISO 6425 and GB/T 18828 |
| 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 |
| 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 |
| Sensors | BioTracker 6.0 PPG biometric sensor; accelerometer, gyroscope, magnetometer, barometric altimeter, ambient light, temperature sensor |
| Connectivity | Bluetooth 5.2 (BLE), 2.4 GHz Wi-Fi; microphone; music storage |
| 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 |
| Compatibility | Android 7.0 and later, iOS 14.0 and later; Zepp app |
From the manufacturer
Amazfit presents the T-Rex 3 as the most capable, longest-lasting outdoor watch in the series. Amazfit US
Owner experiences and issues
Almost every owner highlights battery life; reported runtimes range from 6 to 21 days depending on use, several say they did not reach Amazfit’s figures, and two found earlier T-Rex models lasted longer. Maps and navigation, GPS accuracy, heart-rate readings close to a chest strap and the sturdy build are frequently praised; one owner describes using it on multi-day mountain treks. Criticisms are separate: three people said the screen is hard to read in sunlight; one owner reported constant disconnections from an iPhone 15 Pro, and another said some features need the Zepp app kept open on the phone. One owner could not unlock the screen while swimming, one found cycling tracking wrong, and another saw step counts about half of an Apple Watch’s. The large, thick case and the app not allowing route planning on a map were also mentioned. These reports do not indicate a failure rate.
Best Buy Canada: Amazfit T-Rex 3 48 mm reviews
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