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Xiaomi

Xiaomi Watch S4 41mm

Wearables

Display

Display diagonal
1.32 in*
Display pixel density
320 ppi*
Resolution
466 × 466*
Panel
AMOLED, 1500 nits (HBM), 2200 nits (peak)*
Horizontal pixels
Display: 466 px
Vertical pixels
Display: 466 px

Displays

  • Display*
    Diagonal
    1.32 in*
    Horizontal pixels
    466 px*
    Vertical pixels
    466 px*
    Technology
    AMOLED, 1500 nits (HBM), 2200 nits (peak)*

Power specifications

Battery capacity
320 mAh*

Connectivity & software

Operating system
HyperOS 2*
Cellular networks
No cellular connectivity*
Wi-Fi
No*
Bluetooth
5.4, A2DP, LE*
NFC
Yes (market/region dependent)*

Sensors

  • Accelerometer*
  • barometer*
  • compass*
  • gyro*
  • heart rate*
  • SpO2*
  • thermometer (skin temperature)*

Design & dimensions

Dimensions
41.2 x 41.2 x 9.5 mm (1.62 x 1.62 x 0.37 in)*
Weight
32 g*

Colors

  • Black*
  • Gold*
  • Green*
  • White*

System configuration

Detailed specifications

Specifications 1 · 1 fields
model
Watch S4 41mm*
Scope and conditions
explicit_quantities
aperture_declarations
optical_format_declarations
declared_pixel_matrices
Specifications 2 · 34 fields
Battery · Type
Li-Po 320 mAh*
Body · Build
Stainless steel bezel and frame*
Body · Dimensions
41.2 x 41.2 x 9.5 mm (1.62 x 1.62 x 0.37 in)*
Body · Features
Waterproof (5ATM)*
Body · SIM
No*
Body · Weight
32 g (1.13 oz)*
Camera · Features
No*
Comms · Bluetooth
5.4, A2DP, LE*
Comms · NFC
Yes (market/region dependent)*
Comms · Positioning
GPS, GLONASS, GALILEO, BDS, QZSS*
Comms · Radio
No*
Comms · USB
No*
Comms · WLAN
No*
Display · Protection
Scratch/drop-proof glass*
Display · Resolution
466 x 466 pixels (~320 ppi density)*
Display · Size
1.32 inches*
Display · Type
AMOLED, 1500 nits (HBM), 2200 nits (peak)*
Features · Sensors
Accelerometer, gyro, compass, barometer, heart rate, SpO2, thermometer (skin temperature)*
Launch · Announced
2025, June 26*
Launch · Status
Available. Released 2025, June 26*
Memory · Card slot
No*
Memory · Internal
Unspecified*
Misc · Colors
Black, Green, White, Gold*
Misc · Models
M2502W1*
Historical price
About 120 EUR*
Network · EDGE
No*
Network · GPRS
No*
Network · Technology
No cellular connectivity*
Platform · OS
HyperOS 2*
Sound · 3.5mm jack
No*
Sound · Loudspeaker
Yes*
Colors
Black
Black*
Green
Green*
White
White*
Gold
Gold*
Display
Display
Diagonal
1.32* in
Horizontal pixels
466* px
Vertical pixels
466* px
Technology
AMOLED, 1500 nits (HBM), 2200 nits (peak)*
Sensors
Accelerometer
Accelerometer*
gyro
gyro*
compass
compass*
barometer
barometer*
heart rate
heart rate*
SpO2
SpO2*
thermometer (skin temperature)
thermometer (skin temperature)*

* Provisional data