Product Description Hardware CPU RTL8762DK+HN333 RAM+ROM 64Mb FLASH Screen display 1.39"" IPS Screen Resolution360*360 Touch panel G + F process Material Zinc alloy middle frame + Plastic back case(PC Material)+ TPU strap BT Version BLE 5.1 Battery capacity 400mAh Stanby Time About 30days Working Time About 10 days Charing time 3H G Sensor STK8321 Heart Rate Sensor HX3605 Vibration Built in, Size0820 Speaker 1508 (waterproof horn) Mic TMG4015(waterproof head) Waterproof Level IP68 Charging Requirement Charging 1A or less Software APP Fitcloudpro Function BT calling Heart rate detection Blood oxygen test blood pressure detection Time ,Pedometer,Calorie Consumption,Distance Calculation Multiple sport modes Sleep detection (Sleep time ,Sleep quality) Calls to remind,SMS Reminder,Third-party messaging reminder :Multilingual push Task Reminder (Sedentary reminder ) Music control Synchronous data to APK/APP APP Download Download Fitcloudpro"" from Android market or Apple store Scan the following QR code and download Fitcloudpro"" Watch supports languages Chinese, English, German, French, Italian, Spanish, Japanese, Polish, Russian, Portuguese, Vietnamese, Arabic, Hebrew, Thai,Croatian, Turkish, Czech, Dutch, Indonesian, Malaysian, Finnish language, Greek, Romanian), the factory default is English Push support language Chinese, English, German, French, Italian, Spanish, Japanese, Polish, Russian, Portuguese, Vietnamese, Arabic, Hebrew, Thai,Croatian, Turkish, Czech, Dutch, Indonesian, Malaysian, Finnish language, Greek, Romanian), the factory default is English Packing Size Device Size:mm 49*47.5*13.5MM Gift box Sizemm 148*120*25MM