Screen size and type: 1.62-inch AMOLED screen Screen resolution: 192x490, supports full-screen touch operation Screen brightness: 1200nit, supports automatic brightness adjustment Cover material: 2.5D tempered glass cover Shell material: aluminum alloy middle frame + fiber high-strength polymer Sensor: accelerometer, gyroscope sensor, optical heart rate and blood oxygen sensor, ambient light sensor Waterproof level: 5ATM Wireless connection: Bluetooth 5.4 Adjustable length of wristband: 135-210m...