B57 1.3 inch IPS Color Screen Smart Watch Descriptions: 1. Product mod: B57 smart bracet 2. Chip: NRF 528323. Bluetooth: BT4. 04. Compatible system: Android 4.4 and above, IOS 9.0 or above 5. Waterproof rating: IP 676. Screen: 1.3 inch IPS color Resolution: 240* 2407. Touch: Single touch 8. Battery: 180 mAh 9. Charging: Magnetic charging 10. Charging time: about 1.5H 11. Standby: 25 days or so Working time: 7 days or so 12. Bracet material: PC case + plastic case 13. Product size: about 48.9*34.5*11.7mm/1.92*1.35*0.46in 14. APP support languages: Ukrainian, Russian, German, Italian, Japanese, French, Simplified Chinese, Traditional Chinese, English, Portuguese, 15. System requirement: Android 4.4 and above, for ios 9.0 or moreFeatures: 1. Bracet display function: time display, battery icon display, date display, week display, standard motion function (step, distance, calorie) multi-sport mode (walking, running, cycling, skipping, badminton, basketball) , football, swimming), heart rate, blood pressure detection, blood oxygen detection, sleep time display, screen brightness adjustment, music control. 2. Reminder function: incoming call, SMS, QQ, WeChat reminder (display content and name). , , , Skype, and other foreign social software reminders, alarm clocks (three sets of alarm clocks), sedentary reminders. 3. Other functions: intligent anti-lost, remote control photography, do not disturb mode, raise hand to bright screen, time format setting, factory reset, long press to reject incoming calls, three clock interface section, music control (support previous song, next song, play/pause), weather display, apple health, etc.Note: 1. after receive the watch ,please charging first.Because after a long period of logistics, the watch has a low battery 2. Do not use the smart bracet in sea water, hot water or warm water! 3. Don't wear this device when bathing or swimming for a .4.Wearab