Basic Parameter Size: 52mm*39mm*10.4mm Weight: 40g Color: blackPink, Silver Major function: Bluetooth call, voice control, message screen constant light, NFC, breathing training, calendar, payment code, smart Island, calculator, password unlock, custom dial, weather forecast, music control, step counting, heart rate, sleep, sedentary, mileage, blood oxygen, blood pressure, search, calories, message push Hardware parameter Chipset Supplier BLUETRUM Chipset AB5681G APP FitCloudPro Compatible System Android4.4IOS10.0 FLASH FLASH memory RAM:184KB ROM:128Mb Type AMOLED screen size 1.95" Resolution 410*502 Type Full screen touch Connection parameter BT BT5.3 WIFI N/A Sensor G-Sensor STK8321-w Geomagnetism N/A Altitude pressure N/A Heart Rate HX3918 GPS N/A Battery Type Lithium polymer Capacity 300mAh Charging Method Magnetic charging APP Software features FitCloudPro Massive dial download, sports push, game push, upload photos, step counting, heart rate, sleep, sedentary, mileage, blood oxygen, blood pressure, mobile phone search, calories, Bluetooth, information, wechat, QQ push Search function, alarm clock setting, water reminder, gesture intelligent control, do not disturb mode, reminder mode Phone, SMS, wechat, QQ, Facebook, twitter, instagram, Skype, WhatsApp, line, kakao talk, others Danish, Ukrainian, Urdu, Russian, Bulgarian, Croatian, Hungarian, Bokmal-Norwegian, Indonesian, Turkish, Hebrew, Greek, German, Italian, Latvian, Czech, Slovak, Slovenian, Japanese, French, Polish, Persian, Thai, Estonian , Swedish, Lithuanian, Simplified Chinese, Traditional Chinese, Romanian, Finnish, English, Dutch, Portuguese, Spanish, Vietnamese, Albanian Arabic, Korean, Malay Other Partmeter Waterproof Level Charging time 2H Life time Use for 7-10days, standby for 40 days Product language Chinese, English, German, Russian, Spanish, Portuguese, French, Arabic, Italian, Danish, Czech, Hebrew, Persian, Polish, Swedish, Thai, Vietnamese, Turkish, Croatian, Albanian