Product Name: Fitness Tracker Smart Watch Waterproof Sport Smartwatch Heart Rate Monitor Blood Pressure Model NO.: B57 Feature: WiFi, Bluetooth, Water Resistant Material: Silicone Usage: Detection, Communication Display: TFT Trademark: oem Origin: China Product Description fitness tracker smart watch Waterproof Sport Smartwatch Heart Rate Monitor Blood PressureDescriptions:1. Product model: B57 smart bracelet2. Chip: NRF528323. Bluetooth: BT4.04. Compatible system: Android 4.4 and above, IOS 9.0 or above5. Waterproof rating: IP676. Screen: 1.3 inch IPS color Resolution: 240*2407. Touch: Single touch8. Battery: 180 mAh9. Charging: Magnetic charging10. Charging time: about 1.5H11. Standby: 25 days or so Working time: 7 days or so12. Bracelet material: PC case + plastic case13. Product size: about 48.9*34.5*11.7mm/1.92*1.35*0.46in14. APP support languages: Ukrainian, Russian, German, Italian, Japanese, French, Simplified Chinese, Traditional Chinese, English, Portuguese,Features: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, apple health, etc.