RKSTN Smart Watch (Answer/Make Call), IP67 Waterproof Fitness Watch With Blood Pressure Heart Rate,Sleep,Music Control,Sports Smart Watches For Android/IOS Product parameters: Function:Exercise record (step counting, distance, calorie calculation), exercise mode, message push, information storage, heart rate measurement, sleep monitoring, stopwatch, camera control, music control, full font language, 1.7-inch large screen display, full-screen touc-hing, Bluetooth call , The watch is stored locally, and the music is played independently Chipset Supplier:Goodix+Jieli Chip:GR5515+AC6956A APP:Da Fit Compatible system:Android 4.4 (contain), IOS 8.0 （contain) above FLASH memory:RAM256KB ROM64Mb+FLASH 128 MB Type:TFT Screen size:1.7 inches Pixels:240RGBx280 Touching type:Full screen touching BT:5.1 Bluetooth Low Energy Chip WIFI:NO Bluetooth call:YES NFC:NO G-Sensor:YES Gyroscope:NO Heart rate:Vcare LC11 GPS:NO Battery type:Lithium polymer Battery capacity:230mAh Charging mode:Charging stand Waterproof Level:IP67 Charging time:About 3H Life time:2-3 days of use, 7 days of standby Product language:English, Chinese, Japanese, Korean, German, French, Spanish, Arabic, Russian, Traditional, Ukrainian, Italian, Portuguese Wristband size:Total length 255MM, Adjust length 15.5-23.5cm/6.1-9.25 inch Appearance material:Body: plastic + zinc alloy Bracelet size:4.45x3.65x1.1cm/1.75x1.43x0.43 inch Net weight:50g/0.11 lbs APP Software (Da Fit) Features: Step count, sleep, heart rate, blood pressure, oxygen saturation, exercise data record,Heart rate warning Dial selection, message push, daily alarm clock, photo control, weather information Find bracelet, time format, do not disturb mode time, all-day heart rate test, turn the wrist bright screen Supports languages: Danish, Ukrainian, Russian, Bulgarian, Bokmal, Norwegian, Hindi, Indonesian, German, Italian, Czech, Japanese, Pushto, French, Polish, Thai, Swedish, Simplified Chinese, Traditional Chinese, Finnish, English, Dutch, Portuguese, Spanish, Vietnamese, Arabic, Korean The Package Include: 1 x Smart watch 1 x Charge cable 1 x Use manual