Fangrui Product Details 1. X8 1.69 Inch Hd Color Screen Bluetooth Earphone Smart Bracelet, Support Sleep Monitoring Blood Pressure Monitoring Heart Rate Monitoring 2. Support Bluetooth Calling, Full Touch, Heart Rate, Shake To Take Pictures, Call Reminderreject, Information Storage, Multi-sport Mode, Weather 3. Main Functions: Multi-language, Information Reminder, Alarm Clock, Looking For Bracelet, Health Monitoring; Exercise Record (pedometer, Calories, Mileage) Time, Week, Date 4. Information Reminder Sms, Qq, Wechat, Skype, Facebook, Twitter, Whatsapp, Line, Viber 5. App Supports 14 Languages: Chinese, Traditional Chinese, English, Japanese, Korean, German, Russian, Spanish, Italian, French, Vietnamese, Portuguese, Arabic, Thai 6. Watch Language: English, German, Russian, Spanish, Italian, French, Vietnamese, Portuguese, Arabic, Thai, Polish 11 Languages 7. Parameters: 8. Bluetooth Version: Mobile Phone Bluetooth 5.0, Data Storage Bluetooth 4.0 9. Charging Compartment Battery Capacity: 250mah Polymer Lithium Battery 10. Headphone Battery Capacity: 30mah Polymer Lithium Battery 11. Charging Box Function: The Main Body Can Charge The Pair Of Ears For 2-3 Cycles; Standby Time: 8-12 Days, Music Time: 3.5 Hours; Charging Method: Magnetic Charging, Charging Time: 1-2 Hours 12. Main Chip: Syd8811, Tws Chip: 8926b2 (zhongke Lanxun); Heart Rate Chip: 3300 13. Screen Size: 1.69 Inches 14. Screen Resolution: 240x280 15. Dust And Waterproof Ip67 16. Memory: 192kb Ram+1024kb Rom+64mb Ui-flash 17. Control Method: Touch Display 18. Vibration: Real-time Vibration Reminder 19. Main Shell Material: Glass Lens + Zinc-aluminum Alloy 20. Compatible System: Android 4.4 And Above; Ios 8.0 And Above 21. App Software: Power Band