Amazfit T-Rex Ultra 2 vs Motorola Watch Ultra: which should you buy?

Key differences

Still a tie on the makers' figures: the two are close on peak brightness (3,000 vs 2700 nits). Pick on price, or on what each Guide says it is best for.

• Peak brightness: close (3,000 vs 2700 nits)Amazfit T-Rex Ultra 2: 3,000 nits (1.5 in AMOLED, 480 × 480, up to 3,000 nits, sapphire glass) ConfirmedSourceMotorola Watch Ultra: 2700 nits (1.5-inch curved pOLED, up to 2700 nits, always-on) ConfirmedSource
• Water resistance: 10 ATM vs 5ATMAmazfit T-Rex Ultra 2: 10 ATM (10 ATM; freediving and recreational scuba to 45 m) ConfirmedSourceMotorola Watch Ultra: 5ATM (IP68 and 5ATM) ConfirmedSource
• Weight: 89.2g (with strap) vs 51g (condition not stated), measured differentlyAmazfit T-Rex Ultra 2: 89.2g (89.2g with strap) ConfirmedSourceMotorola Watch Ultra: 51g ConfirmedSource

From each maker's own specifications. A point is listed only when both makers state a figure and the two differ; a point either maker does not state is left out, never guessed. Two figures measured under different conditions are shown side by side, not compared.

Who should buy which

• The Amazfit T-Rex Ultra 2 Guide names it for outdoor adventure and travel.Outdoor adventure: Freediving or recreational scuba, it is certified for diving to 45 meters. ConfirmedSourceTravel: For a trip, typical use battery life runs up to 30 days, and heavy use up to 15 days. ConfirmedSource
• The Motorola Watch Ultra Guide names it for fitness and sleep.Fitness: Fitness tracking powered by Polar, with calorie estimates, activity breaks and dual-band GPS for workouts. Source linkedSourceSleep: Multi-stage sleep tracking with Polar's Sleep Plus Stages and Nightly Recharge. Source linkedSource

From what each Guide names the product best for. Both Guides also name navigation.