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Compare Xiaomi Watch S4

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Xiaomi Watch S4Xiaomi Watch S4 Black
£ 109,99
3 colours
Polar Grit X2Polar Grit X2 Black
£ 478,79
1 colour

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Dimensions:47,3 x 47,3 x 12 mm42 x 42 x 11,3 mm44,7 x 44,7 x 12,5 mm
Weight:44,5 grcurrently unknown62 gr
Stand-by time:dependent on usagedependent on usagedependent on usage
Call time:dependent on usagedependent on usagedependent on usage
Announced:2 march 20252 march 20154 june 2025

Design type

Watch:

Controls

Directional key:
Swivel crown:
Touchscreen:Multi-touch, capacitive

User interface

HyperOS:2.0

Display

Colour display:16.777.216 colours (24 bits), AMOLED, Always On featureAMOLEDAdjustable display brightness, AMOLED, Always On feature
Peak brightness:1500 nits
Refresh rate:60 Hz
Resolution:466 x 466 pixels400 x 400 pixels416 x 416 pixels
Size:1.43 inch1.4 inch1.28 inch
Aspect ratio:1:11:11:1
Pixels Per Inch (PPI):461404460
Screen-to-body ratio:29.5%35.8%26.5%

Carrying method

Strap:Interchangeable
Wrist Size:135-210 mm
Size:22 mm

Materials

Aluminium:
Dirt and waterproof:5 ATMIP67
Gorilla Glass:
Plastic:
Rugged casing:MIL-STD-810H
Stainless Steel:

Telephony

Integrated handsfree speaker:
Vibrating alert:

Personalisation

Multiple homescreens:
Widgets:

Personal Information
Management (PIM)

Agenda:
Alarm clock:
Date and time notation:
Reminder list:
Stopwatch & countdown timer:
To-do list:

Available applications

Calories:
Pedometer:
Sleep tracker:
Stressmonitor:

Navigation

Beidou:
Digital Compass:
Galileo:
GLONASS:
GPS receiver:
Quasi-Zenith (QZSS):
A-GPS:

Audio

Built-in speakers:
Microphone:

Connections

Pogo pin:
USB:Type-C

Connectivity

Bluetooth:v5.3v4.1
NFC:

Power supply

Battery:Li-ionLi-ionLi-poly
Capacity:486 mAh300 mAh310 mAh

Sensors

Ambient light sensor:
Barometer:
Gesture recognition:
Gyroscope:
Heart rate monitor:
Oxygen saturation (SpO2):
ECG:
Skin temperature sensor:

Compatibility

With Android:From 8.0
With iOS:From 14.0

Contents of the package

Manual:
Oplaadcase:
Warranty card:
Wristband:

Operating system

Wear OS:

Hardware

Processor:Qualcomm Snapdragon 400
Clock Frequency:1.2 GHz275 MHz
Integrated antenna:

Build-in memory

Internal memory:
Size (RAM):512 MB37 MB
Storage:4 GB32 GB
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