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Package Included: 1* Bracelet 1* Instruction Manual 1* Charging Cable Specifications: 1. Bracelet 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). Facebook, Whatsapp, Twitter, Skype, and other foreign social software reminders, alarm clocks (three sets of alarm clocks), sedentary reminders. 3. Other functions: intelligent 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 selection, music control (support previous song, next song, play/pause), weather display, for apple health, etc. Description: 1. Product model: B57 smart bracelet 2. Chip: NRF52832 3. Bluetooth: BT4.0 4. Compatible system: Android 4.4 and above, IOS 9.0 or above 5. Waterproof rating: IP67 6. Screen: 1.3 inch IPS color Resolution: 240*240 7. 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. Bracelet 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, Notes: 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 bracelet in sea water, hot water or warm water! 3. Don't wear this device when bathing or swimming for a long time. 4.Wearable devices monitors human activities through electronic sensors,and they are at the consumer electuonics level.It's normal for certain deviation.The user should treat data objectively. 5.Please do not compared to hospital equipment about reading,it is NOT a medical device !please don't buy for check the health(heart problem, blood pressure problem) it's not for professional use.Just can be a reference.