1.43” 466 x 466px ,Bluetooth 5.2, Working hours: up to 7 days, Built-in microphone, Protection from water, dust, Alarm, Calculator, Monitoring daily activity, Personal Activity Index (PAI), Stopwatch, Messages, Sports, Sleep tracking, Camera control, Music player control, LE, Battery: 260 mAh, Weight: 43g, Leather Strap, Android/iOS, Waterproof: IP68