Amazfit T-Rex Ultra 2

Amazfit T-Rex Ultra 2 is a watch from 2026, sitting in the flagship band at an indicative $549.

It reads 18 of the 33 signals this comparison tracks. Full coverage of activity. Nothing at all from body composition.

By sensor class: 10 at consumer grade. That grade is my classification of the hardware, not a lab test. Those readings come from an optical heart rate sensor, an optical blood oxygen sensor, a skin temperature sensor, a GPS receiver, a barometer and an accelerometer. Blood oxygen is a spot reading you take yourself, not a continuous one.

Its 30 days per charge are the 5th longest of the 76 devices of its kind here that publish a figure. The AMOLED screen can stay always on. Multi-band GPS. Rated 10ATM + 45m freediving, fine for swimming and diving. It weighs 89 g. On top of the tracking it also handles music on the device, contactless payments and offline maps. Case size 51mm. No subscription is required.

February 2026 rugged flagship, the first Amazfit certified for freediving to 45 m. Works down to minus 30 degrees.