Sports watch Amazfit T-Rex Pro with 14 days of battery life in the test

The beefy-looking, smart sports watch Amazfit T-Rex Pro is more reminiscent of Casio’s G-Shock watches. It measures 47.7 by 47.7 millimeters and is a massive 13.5 millimeters thick. For the size, it feels light at 59 grams. Third-party apps cannot be installed.

The Pro version hardly differs from its predecessor without Pro, which is thrown at you for 85 euros: It is even more resistant to dust, water and vibrations and can withstand temperatures at which no one in their mind goes outside the door. The better water resistance, which is now classified up to 10 ATM, is more useful in everyday life. The T-Rex Pro is not a diver’s watch, it is enough for rinsing and swimming.

The round display has a diagonal of 3.3 centimeters (1.3 inches) and shows 360 × 360 pixels. An oleophobic coating on the Gorilla 3 cover glass reduces fingerprints caused by touchscreen operation. The dial lights up somewhat delayed after turning the wrist; a darkened, permanently visible time display is possible, but this is at the expense of the battery life. The battery (390 mAh) is charged via a USB cable with a two-contact connection. The runtime in the test with daily activity recording including GPS, but without always-on display, was 14 days. In power-saving mode, the watch cuts the Bluetooth connection and only logs sleep and steps, which should bring the runtime to 60 days; we have not tested that.