Xiaomi Watch S4 41mm vs Amazfit T-Rex Pro comparison

Compare Xiaomi Watch S4 41mm
Compare Amazfit T-Rex Pro
key specs
Display Size41mm-
Strap MaterialMilaneseSilicone
Dial ShapeRoundRound
Ideal ForUnisexUnisex
Compatible OS-iOS, Android
Display Type-AMOLED
general
BrandXiaomiAmazfit
ModelWatch S4 41mmT-Rex Pro
Release dateSeptember 24, 2025March 23, 2021
Dial ShapeRoundRound
Strap MaterialMilaneseSilicone
SizeRegularRegular
Touchscreen1.32Yes
Water Resistant5ATM10 ATM
Water Resistance Depth50 m-
UsageRegular-
Dial MaterialStainless steelPolycarbonate
Ideal ForUnisexUnisex
Model Name-Amazfit T-Rex Pro
Dial Colour-Desert Grey, Meteorite Black, Steel Blue
dimensions
Width41.247.7
Height41.247.7
Diameter9.5-
Weight (g)32.0059.40
Thickness-13.5
product details
SensorHeart rate sensor (with blood oxygen sensor), Accelerometer, Gyroscope, Ambient light sensor, Electronic compass, Barometer sensor, Temperature sensorThree-axis acceleration sensor, Heart Rate Sensor, BioTracker 2 PPG , ambient light sensor, Geomagnetic, three-axis gyroscope, barometric altimeter
Battery Type320mAh-
Battery Life8 days18 days
Compatible Device-Android, iOS
Notification-Yes
Charge Time-1.5 hours
Charger Type-Magnetic 2-pins Pogo Pin
Rechargeable Battery-Yes
connectivity features
Call FunctionYes-
BluetoothYesYes
Bluetooth Version5.45.0
GPSYesYes
Wi-Fi-Yes
platform and storage features
Operating SystemXiaomi HyperOS 3RTOS
Compatible Operating System-iOS, Android
camera and display features
Display Resolution466 × 466320x360
Display Size41mm-
Other Display Features1500nits, 60Hz refresh rate-
Display Type-AMOLED
Scratch Resistant-Tempered Glass + anti-fingerprint coating
fitness and watch functions
Step CountYesYes
Heart Rate MonitorYesYes
AltimeterYesYes
CompassYes-
CalendarYesYes
Alarm ClockYesYes
Date & Time DisplayYesYes
LanguageEnglishEnglish
Calorie Count-Yes
Number of Buttons-4
Other Fitness Features-100+ sports modes
Other Watch Functions-Heart rate monitoring, sleep quality monitoring
audio and video features
SpeakerYesYes
MicrophoneYes-

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