Xiaomi Watch S4 41mm vs Amazfit Bip U comparison

Compare Xiaomi Watch S4 41mm
Compare Amazfit Bip U
key specs
Display Size41mm-
Strap MaterialMilaneseSilicone
Dial ShapeRoundRectangle
Ideal ForUnisex-
Strap Colour-Black, Green, Pink
Compatible OS-Android, iOS
general
BrandXiaomiAmazfit
ModelWatch S4 41mmBip U
Release dateSeptember 24, 2025October 15, 2020
Dial ShapeRoundRectangle
Strap MaterialMilaneseSilicone
SizeRegularRegular
Touchscreen1.32Yes
Water Resistant5ATM5 ATM
Water Resistance Depth50 m50 metres
UsageRegular-
Dial MaterialStainless steelPolycarbonate
Ideal ForUnisex-
Model Name-Bip U
Interchangeable Strap-Yes
Strap Colour-Black, Green, Pink
Dial Colour-Black, Green, Pink
dimensions
Width41.235.5
Height41.240.9
Diameter9.5-
Weight (g)32.0031.00
Thickness-11.4
product details
SensorHeart rate sensor (with blood oxygen sensor), Accelerometer, Gyroscope, Ambient light sensor, Electronic compass, Barometer sensor, Temperature sensorBioTracker 2 PPG Biological optical sensor, 6-axis acceleration sensor
Battery Type320mAh-
Battery Life8 days9 days
Compatible Device-Android, iOS
Notification-Yes
Charge Time-2 hours
Charger Type-2 Pogo Pin Charger
connectivity features
Call FunctionYes-
BluetoothYesYes
Bluetooth Version5.45.0
GPSYes-
Wi-Fi-Yes
platform and storage features
Operating SystemXiaomi HyperOS 3RTOS
Compatible Operating System-Android, iOS
camera and display features
Display Resolution466 × 466320x302
Display Size41mm-
Other Display Features1500nits, 60Hz refresh rateAnti-Fingerprint Coating, 2.5D Corning Gorilla Glass 3
fitness and watch functions
Step CountYesYes
Heart Rate MonitorYesYes
AltimeterYes-
CompassYesYes
CalendarYesYes
Alarm ClockYesYes
Date & Time DisplayYesYes
LanguageEnglishEnglish
Calorie Count-Yes
Number of Buttons-1
Other Fitness Features-60 sports modes
Other Watch Functions-24 hour heart rate monitoring, sleep quality monitoring, blood oxygen level sensor, menstrual cycle tracker
audio and video features
SpeakerYesYes
MicrophoneYesYes
Other Multimedia Features-show notifications, control music, set alarms, remote control the phone’s camera

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