Xiaomi Watch S4

Specifications:

Display Size:
1.43” AMOLED display
60Hz refresh rate

Water/Dust Resistance:
5ATM

Battery:
486mAh
Typical usage mode: Up to 15 days

Connection:
Bluetooth 5.3

Bluetooth Calling:
Yes

Opearating System:
Xiaomi HyperOS 2.0

Function:
Dual-microphone noise reduction.
Heart rate sensor
Blood oxygen sensor
Built-in GNSS

Compatibility:
Android 8.0 or iOS 12.0 and above

Strap:
Black: Fluororubber strap
Silver: Fluororubber strap
Rainbow: Fluororubber strap+nylon strap