Features:

• Display: 1.43'' AMOLED display
• Resolution: 466 x 466 pixels, 60Hz High refresh rate
• Bluetooth® phone call: When your phone receives a call, you can answer it on your watch with one touch and talk directly into the watch (Your watch must be connected to the phone)
• Blood oxygen monitoring: All-day heart rate and SpO? monitoring
• Straps: Xiaomi Watch S1 (Black), is with black leather strap and black fluororubber strap.
• Xiaomi Watch S1 (Silver), is with brown leather strap and grey fluororubber strap.
• Adjustable Length: 157 to 241 mm
• Watch strap material: Fluorine rubber/Leather
• Sensors: Optical heart rate sensor, Accelerometer, Gyroscope, Electronic compass, Barometer Sensor Light Sensor, Cap sensor(Multi-channel PPG Bio-sensor)
• Water Resistant Level: 5ATM (Can be worn during swimming)
• Battery: 470mAh, 12 Days for typical usage
• Charging: Wireless charging
• NFC: Supports contactless payment with MasterCard
• Connectivity: Bluetooth 5.2®, Wi-Fi IEEE 802.11b/g/n 2.4GHz
• Fitness Modes: 117 Fitness Mode
• Dimensions: 46.5 x 46.5 x 10.9 mm
• Weight: 52g (not include strap)