Shenzhen HDT21 Smart Watch Instruction Manual
Shenzhen HDT21 Smart Watch Specifications Model: HDT21 Display: 2.01-inch AMOLED touch screen Resolution: 240 × 296 pixels Bluetooth: Bluetooth 5.3 Battery: 260 mAh Waterproof: IP67 Sensors: Heart rate sensor, motion sensor Functions: Step counter, sleep monitor, blood oxygen, sports modes…