• Support Bluetooth calls, making call scenarios more convenient
• Large memory, with several built-in dials and menu modes, rich UI scenarios 
• Support multiple commonly used sports modes
• 1.97-inch large AMOLED screen with 390 * 450 high-definition resolution 
• High-precision heart rate and blood oxygen monitoring
• 5ATM deep waterproof, suitable for wearing in more environments

Specification:

• Main body size: 47.58x41.12x10.5 mm
• Screen size: 1.97 inches
• Screen type: AMOLED color square screen
• Screen resolution: 390x450(supports full-screen touch operation)
• Screen brightness: up to 600nits (supports automatic brightness adjustment)
• Cover material: 2D straight screen glass cover
• Shell material: aluminum alloy middle frame+stainless steel crown+ fiber high-strength polymer
• Sensor: acceleration sensor/gyro sensor/optical heart rate and blood oxygen sensor/Ambient light sensor/geomagnetic sensor
• Waterproof level: 5ATM
• Data connection: supports GNSS, supports NFC, Bluetooth 5.3
• Vibration motor: support
• Battery capacity: 470mAh
• Battery type: lithium-ion polymer battery
• Charging time: about 85min
• Applicable wrist size: 135mm-205mm
• Wristband material: TPU
• System language: Simplified Chinese, Traditional Chinese, English
• Supported systems: Xiaomi HyperOS, Android8.0 or iOS12.0 and above
• Support App: Xiaomi Sports Health