Feature:Strap: SiliconeBluetooth: Bluetooth LE 4.0Main chip: HS6620DAcceleration sensor: Bosch BOSCH BMA421Heart rate: Tianyi Hexin HRS3300Screen: IPS true color screenScreen size: 1.3 inchesResolution: 240x240Battery: 110 mAhCharging connector: charging clip chargingCharging parameters: 5V/110mAhWorking temperature: 10-50 degreesBlood pressure measurement: supportDynamic heart rate: exercise heart rate curveTouch: screen single touchColor: pink, gray, black, whiteProduct size (mm): 43.5*10.2MMProduct net weight (g): 38Andiord system supports Android 4.4 and aboveIOS system Apple IOS9.0 or aboveFunctions:Toughened glass Capacitive touch color screen IP68 waterproof ( you can wear it to rain, wash hands , swimming, but don't put it into hot water)Built-in 110mAh polymer batteryHeart Rate Blood pressure Blood oxygen DetectionBluetooth Push: Support (Caller, SMS Messenger, app news reminders)Calling remind:when you have a call or information, it wil flash to remind youPedometer: Support (Exercise step, calorie consumption, movement mileage record)Multi Sport Mode: Walking, running, badminton, Basketball, Football, Rope skipping mode BT4.0, Compatible System Android4.4 & IOS9.0 and aboveMore function: Music control, Motion records (step, mileage), sleep monitoring, sedentary reminder, calorie calculation, stopwatch, low battery alert, raising the bright screen, fast charging, low power consumption, vibration, exercise mode, remote camera, intelligent alarm, Bracelet language: Chinese, English, Korean, German, Spanish, Japanese, French, Russian, Portuguese, Mobile APP language: Chinese, English, Korean, German, Spanish, Japanese, French, Italian, Russian, Portuguese, Arabic Package Included:1 x Smart Watch1 x USB Charging Cable1 x User's manualNO Retail Box. Packed Safely in Bubble Bag.