Display: 1.72-inch AMOLED Touch Display with 1500 nits HBM brightness and Always-On Display (AOD) support. 1 Design/Color: Aluminum alloy frame in Midnight Black with a TPU strap. 2 Battery Life: Up to 21 days typical use; up to 9 days with AOD enabled (233mAh). 3 Sports Modes: Over 150 sports modes, including advanced swimming mode with real-time underwater heart rate monitoring. 4 Health Monitoring: 24/7 Heart Rate, Blood Oxygen ( 5 $\text{SpO}_2$ ), Sleep, and Stress monitoring; includes 6 $\text{VO}_2$ max and Training Load tracking. 7 Sensors: Accelerometer, Gyroscope, Optical Heart Rate/ 8 $\text{SpO}_2$ , Ambient Light Sensor, and Electronic Compass . 9 Water Resistance: 5ATM rating (suitable for swimming). 10 Connectivity: Bluetooth 5.4. 11 OS: Runs on Xiaomi HyperOS 2; compatible with Android 8.0 / iOS 14.0 and above. 12 Smart Features: Notifications, music control, camera control, weather, and Xiaomi Smart Hub integration. 13

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