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Xiaomi Watch S4 15th Anniversary Edition vs Xiaomi Watch S2 comparison

 Compare Xiaomi Watch S4 15th Anniversary Edition
Xiaomi Watch S4 15th Anniversary Edition
Compare Xiaomi Watch S2
Xiaomi Watch S2
key specs
Display Size36mm42mm
Compatible OSAndroid 8.0 or above, iOS 12.0 or aboveAndroid, iOS
Dial ShapeRoundRound
Display TypeAMOLEDAMOLED
Ideal ForUnisexUnisex
Strap Colour-Black, Light Gold and Silver
Strap Material-Leather
general
BrandXiaomiXiaomi
ModelWatch S4 15th Anniversary EditionWatch S2
Release dateMay 23, 2025January 10, 2022
Model NameXiaomi Watch S4 15th Anniversary EditionXiaomi Watch S2
Dial ColourBlackBlack
Dial ShapeRoundRound
SizeRegularLarge
Touchscreen1.43Yes
Interchangeable StrapYesYes
Water Resistant5 ATMYes
UsageRegularFitness & Outdoor
Ideal ForUnisexUnisex
Strap Colour-Black, Light Gold and Silver
Strap Material-Leather
Water Resistance Depth-5ATM
dimensions
Width47.3-
Height47.3-
Thickness12-
Weight (g)44.50-
product details
SensorHeart Rate Monitor, Stress, SleepBlood Oxygen Monitor, Heart Rate Monitor
Compatible DeviceAndroid and iOSAndroid, iOS
Battery Type486mAh305
Closure-Strap Buckle
Notification-Message
Battery Life-12 Days
Rechargeable Battery-Yes
connectivity features
BluetoothYesYes
Bluetooth Version5.35.2
Wi-FiYes-
GPSYesYes
Other Connectivity FeaturesNFC, Galileo, Glonass, Beidou, QZSSNotifications
Call Function-Yes
Third Party App Support-Yes
Call Features-call, answer, reject and mute calls
platform and storage features
Operating SystemHyperOS 2MIUI Watch OS
Compatible Operating SystemAndroid 8.0 or above, iOS 12.0 or aboveAndroid, iOS
camera and display features
Display Resolution466 x 466466X466
Display Size36mm42mm
Display TypeAMOLEDAMOLED
Other Display Features-Touch Screen
fitness and watch functions
Step CountYesYes
Calorie CountYes-
Heart Rate MonitorYesYes
Alarm ClockYesYes
Date & Time DisplayYesYes
LanguageEnglish-
Compass-Yes
Calendar-Yes
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