Wearable comparison / Amazfit / Amazfit T-Rex 3 Pro

AMAZFIT

Amazfit T-Rex 3 Pro

Name: Amazfit T-Rex 3 Pro
Brand: Amazfit

WatchPremiumreleased 2025

Key specs

Battery

25 d · GPS 38 h48mm: up to 25 days; 38h accurate GPS / 85h saver

Display

AMOLED · always-on

Water resistance

10ATM / 100m (swim, dive)

GPS

Multi-band

Case size

48mm (also 44mm)

Works with

iOS + Android

Subscription

Not required · Zepp Aura (optional)Zepp app free; no subscription required

Extras

MusicOffline maps

not confirmed: weight_g, extras.music

What it tracks

Heart & vitals

Resting heart rateConsumer

HRVConsumer

Blood oxygen (SpO2)Consumer

Respiratory ratetracked

Skin temperaturetracked

Sleep

Sleep durationConsumer

Sleep stagesConsumer

Sleep scoretracked

Sleep efficiencytracked

Activity

StepsConsumer

Active minutesConsumer

CaloriesConsumer

WorkoutsConsumer

Floorstracked

Distancetracked

Fitness

VO2maxtracked

Training loadtracked

Recovery / readinesstracked

All-day stressConsumer

Screening, not a medical diagnosis. This device offers SpO2. These are wellness screening features, not a substitute for a clinical evaluation.

Sources

https://us.amazfit.com/products/t-rex-3-pro
https://runtothefinish.com/amazfit-t-rex-3-pro-review/

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