Outline Dimensions: 56.75mm52.45mm12mm Craft: Zinc alloy Strap Material: Silicone strap Major Functions: Step counting. Calories. Distance. Built-in 100+ sports modes. Blood pressure. Heart rate. Blood oxygen. Sedentary reminder. Sleep monitoring. Automatic heart rate monitoring. Lift wrist to wake screen. Local alarm clock setting. World clock. Stocks. Remote camera control. Find phone. Distance. Calories. Steps. Real-time heart rate. Exercise duration. Incoming call. SMS. Email. WeChat. QQ and other information reminders. Time display. Lift wrist to wake screen. Incoming call reminder. SMS reminder. Alarm clock reminder. Shake to take photos. Find phone. Dial switch. Brightness adjustment. Language switch. QR code. Stopwatch. Weather. Factory reset. Music control. Vibration setting. Wrist lift duration setting. Screen on duration setting. Massive dials. etc. Chipset: 8763EWE Compatible System: Android 4.4. iOS 9.0 and above RAM: 160KB External Storage (FLASH): 128Mb Support: Yes Size: 1.52 inches Resolution: 360*360 Touch Type: Full screen touch Touch Screen Material: Tempered glass Call: Supported Music Features: Supported Motor Function: Supported Blood Oxygen: Supported Horn: Super large magnetic 0815 waterproof speaker Mike: Strong resistance 4015 waterproof microphone BT: Bluetooth 5.0 BLE. Transmission range: about 10m G-Sensor: Silead micro SC7A20 Heart Rate: Tianyihe core 3605 high-precision heart rate module Motor: Flat 0820 motor Battery Type: Polymer soft pack Capacity: 350mAh Charging Method: Magnetic suction Keypad: 4 keys LED Indicator Light: Yes Waterproof Level: IP67 Firmware Over-The-Air (FOTA): OTA Package Includes: 1 x Smart Bracelet. 1 x Magnetic Charging Cable. 1 x User Manual