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

Strap

Black: fluororubber strapAdjustable strap length: 140-210mm approx.

Silver: fluororubber strapAdjustable strap length: 140-210mm approx.

Rainbow: fluororubber strap+nylon strapAdjustable strap length: 135–210mm approx.

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 daysCapacity: 486mAh

Display

Resolution: 466 x 466 pixels，PPI 3261.43-inch AMOLED display60Hz 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: SupportedWater resistance rating: 5ATM*The 5ATM water resistance rating (equivalent to a depth of 50 meters) means it can be worn in swimming pools, while swimming near the shore, and during other shallow water activities. It is not suitable for wearing in hot showers, saunas, or while diving. Make sure to avoid direct impacts from swift currents during water sports. Water resistance is not permanent and may deteriorate over time.Speaker: SupportedMicrophone: 2 micsNFC: 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® 5.3Operating system: Xiaomi HyperOS 2Compatibility: Supports smartphones with Android 8.0 and above, or iOS 14.0 and above.Charging port: 2-Pin magnetic charging dock

Package contents

Xiaomi Watch S4 (including bezel and strap) / Magnetic charging dock / User manual (including warranty notice)