Xiaomi Watch S4 15th Anniversary Edition vs Amazfit Bip U comparison

Compare Xiaomi Watch S4 15th Anniversary Edition
Compare Amazfit Bip U
key specs
Display Size36mm-
Compatible OSAndroid 8.0 or above, iOS 12.0 or aboveAndroid, iOS
Dial ShapeRoundRectangle
Display TypeAMOLED-
Ideal ForUnisex-
Strap Colour-Black, Green, Pink
Strap Material-Silicone
general
BrandXiaomiAmazfit
ModelWatch S4 15th Anniversary EditionBip U
Release dateMay 23, 2025October 15, 2020
Model NameXiaomi Watch S4 15th Anniversary EditionBip U
Dial ColourBlackBlack, Green, Pink
Dial ShapeRoundRectangle
SizeRegularRegular
Touchscreen1.43Yes
Interchangeable StrapYesYes
Water Resistant5 ATM5 ATM
UsageRegular-
Ideal ForUnisex-
Strap Material-Silicone
Water Resistance Depth-50 metres
Dial Material-Polycarbonate
Strap Colour-Black, Green, Pink
dimensions
Width47.335.5
Height47.340.9
Thickness1211.4
Weight (g)44.5031.00
product details
SensorHeart Rate Monitor, Stress, SleepBioTracker 2 PPG Biological optical sensor, 6-axis acceleration sensor
Compatible DeviceAndroid and iOSAndroid, iOS
Battery Type486mAh-
Notification-Yes
Battery Life-9 days
Charge Time-2 hours
Charger Type-2 Pogo Pin Charger
connectivity features
BluetoothYesYes
Bluetooth Version5.35.0
Wi-FiYesYes
GPSYes-
Other Connectivity FeaturesNFC, Galileo, Glonass, Beidou, QZSS-
platform and storage features
Operating SystemHyperOS 2RTOS
Compatible Operating SystemAndroid 8.0 or above, iOS 12.0 or aboveAndroid, iOS
camera and display features
Display Resolution466 x 466320x302
Display Size36mm-
Display TypeAMOLED-
Other Display Features-Anti-Fingerprint Coating, 2.5D Corning Gorilla Glass 3
fitness and watch functions
Step CountYesYes
Calorie CountYesYes
Heart Rate MonitorYesYes
Alarm ClockYesYes
Date & Time DisplayYesYes
LanguageEnglishEnglish
Compass-Yes
Calendar-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
Speaker-Yes
Microphone-Yes
Other Multimedia Features-show notifications, control music, set alarms, remote control the phone’s camera

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