Display: 1.46 inches. Diameter: 44 mm. Battery: 270 mAh. Battery life: up to 5 days, depending on usage. Case material: metal and plastic. Strap material: steel + interchangeable blue silicone strap. Protection rating: IP67. Includes two straps (metal and silicone). Functions: Step, calorie, and distance counter. Step and sleep goals. Sleep monitoring. Heart rate. Automatic heart rate measurement. Blood pressure. Electrocardiogram. Blood oxygen. Breathing guide. Sport mode. Sedentary reminder. Drink water reminder. Notifications (social media, email, calls, etc.). Read received messages. Make and receive Bluetooth calls. Alarms. Stopwatch. Countdown timer. Weather and temperature. Remote music control. Remote camera control. Choose and customize watch face. Do not disturb mode. Find watch. Find phone. Wake screen by wrist raise. Video game. Password. World clock. Voice assistant. Screensaver. Bedside mode. SOS signal. Manual time setting. Select tones. Watch-only mode.