Parameter: LCD size:0.96 inch Display screen resolution:160*80dpi Polymer battery:80mAh CPU:TLSR8251F512ET32/5*5mmQFN32 Step sensor：SC7A20/2*2mm/LGA12 Heart rate chip：SC7R31 BT version：BLE 5.0 RAM+ROM+Flash:32KB+512KB+4MB Data storage:7day Waterproof level:IP67 Charging method :USB Charging method :Android 4.4 and above，iOS 9.0 APP:keep health Feature: Sports Health Daily activity record (step count, calories, distance) Sleep monitoring (deep sleep, light sleeper, awake) Heart rate monitoring, blood pressure measurement, blood oxygen detection, body temperature monitoring Multiple exercise modes (running, football, cycling, yoga, dancing, badminton, tennis, basketball, mountain climbing, etc.) Sedentary reminder, goal achievement reminder, exercise data synchronization Google Health/Apple Health Information reminder Information push (SMS, QQ, WeChat、WhatsApp、Facebook、Twitter、Line、Skype、Instagram、LinkedIn） Incoming call reminder (number/contact), call rejection, drinking water reminder Smart assistant Smart alarm clock (8 can be set), stopwatch, find mobile phone, turn the wrist to bright screen, various dials (default 8) Dial customization, do not disturb mode, camera control, device reset, firmware online upgrade, switch machine Watch language: English, German, French, Spanish, Japanese, Chinese, Italian, Russian, Dutch Packing list: 1* Smart Bracelet 1* Manual 1* Retailed Box Note: this bracelet has no USB charger, please remove the strap and directly use the bracelet to connect the USB adapter to charge, thank you, dear!