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Xiaomi Watch S4 15th Anniversary Edition vs Fire-Boltt Ninja Call 2 comparison

 Compare Xiaomi Watch S4 15th Anniversary Edition
Xiaomi Watch S4 15th Anniversary Edition
Compare Fire-Boltt Ninja Call 2
Fire-Boltt Ninja Call 2
key specs
Display Size36mm-
Compatible OSAndroid 8.0 or above, iOS 12.0 or above-
Dial ShapeRoundSquare
Display TypeAMOLED-
Ideal ForUnisexUnisex
Strap Colour-Black, Blue, Gold, Red, Silver
Strap Material-Silicone
general
BrandXiaomiFire-Boltt
ModelWatch S4 15th Anniversary EditionNinja Call 2
Release dateMay 23, 2025March 1, 2022
Model NameXiaomi Watch S4 15th Anniversary EditionFire-Boltt Ninja Call 2
Dial ColourBlackBlack
Dial ShapeRoundSquare
SizeRegularRegular
Touchscreen1.43Yes
Interchangeable StrapYes-
Water Resistant5 ATMYes
UsageRegularFitness & Outdoor
Ideal ForUnisexUnisex
Strap Colour-Black, Blue, Gold, Red, Silver
Strap Material-Silicone
dimensions
Width47.3-
Height47.3-
Thickness12-
Weight (g)44.50-
product details
SensorHeart Rate Monitor, Stress, SleepSpO2 Monitoring, Heart Rate Monitor, Optical Heart Rate Sensor
Compatible DeviceAndroid and iOSAndroid, iOS
Battery Type486mAh-
Notification-Call, Text, Social Media
Battery Life-10 Days
Rechargeable Battery-Yes
connectivity features
BluetoothYesYes
Bluetooth Version5.35
Wi-FiYes-
GPSYes-
Other Connectivity FeaturesNFC, Galileo, Glonass, Beidou, QZSSSmart notifications
Call Function-Yes
Call Features-calling
platform and storage features
Operating SystemHyperOS 2-
Compatible Operating SystemAndroid 8.0 or above, iOS 12.0 or above-
camera and display features
Display Resolution466 x 466240x288
Display Size36mm-
Display TypeAMOLED-
Other Display Features-Touch Screen
fitness and watch functions
Step CountYesYes
Calorie CountYes-
Heart Rate MonitorYesYes
Alarm ClockYesYes
Date & Time DisplayYesYes
LanguageEnglishEnglish
Number of Buttons-1
Other Fitness Features-Meditative breathing, sleep tracking, drink water reminders
Other Watch Functions-Stopwatch, sedentary reminders
audio and video features
Other Multimedia Features-Music control
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