Xiaomi Watch S4 - Black

Dimensions:

• 47.3mm x 47.3mm x 12.0mm

• Height, width and thickness dimensions exclude the strap and protrusions

• 44.5g approx. (without inbox strap)

Frame:

• Aluminum alloy frame

Sensors:

• Heart rate sensor (with blood oxygen sensor) | Accelerometer | Gyroscope | Ambient light sensor | Electronic compass | Barometer sensor | Hall sensor

Satellite Positioning Systems:

• GPS | Galileo | Glonass | BeiDou | QZSS

Battery:

• Typical usage time: 15 days

• Capacity: 486mAh

Display:

• Resolution: 466 x 466 pixels，PPI 326

• 1.43-inch AMOLED display

• 60Hz refresh rate

• Display refresh rate may vary across different interfaces. Please refer to the actual usage scenario.

• Brightness: HBM 1500 nits

• The HBM brightness is the maximum brightness when the entire screen lights up.

Specifications:

• Built-in GNSS: Supported

• Water Resistance Rating: 5ATM

• Speaker: Supported

• Microphone: 2 mics

• NFC: Supported

• NFC availability may vary by region.

• Bluetooth Calling: Supported

• The watch must be kept connected to the smartphone's Bluetooth. Voice calls from third-party apps are not currently supported.

• Wireless Connectivity: Bluetooth® 5.3

• Operating System: Xiaomi HyperOS 2

• Compatibility: Supports smartphones with Android 8.0 and above, or iOS 14.0 and above.

• Charging Port: 2-Pin magnetic charging dock