X8S 1.8 inch Screen 2 in 1 TWS Earphone Smart Watch, Support Bluetooth Call Heart Rate Blood Oxygen Monitoring About Product 1. Bluetooth version: headset Bluetooth 5.0, data storage Bluetooth 4.0 2. Charging compartment battery capacity: 250mAh polymer lithium battery 3. Headphone battery capacity: 25mAh polymer lithium battery 4. Standby time: 8-12 days 5. Music time: 3.5 hours 6. Charging method: Magnetic charging 7. Charging time: 1-2 hours 8. Main chip: SYD8811 9. TWS chip: AB5656A2 10. Heart rate chip: 3300 11. Screen resolution: 240x284 12. Waterproof grade: IP67 13. Memory: 64MB UI-Flash 14. Control method: touch screen 15. Compatible system: Android 4.4 and above, IOS 8.0 and above 16. APP software: Flow Fit 17. Watch weight: 56.0g 18. Main shell material: glass lens + zinc aluminum alloy Function 1. Featured functions: Bluetooth call, full touch, heart rate, shake to take pictures, call reminderrejection, information storage, multi-sport mode, weather 2. Main functions: multi-language, information reminder, alarm clock, bracelet search, health monitoring, exercise record (pedometer, calories, mileage), time, week, date 3. Information reminder: SMS, QQ, WeChat, Skype, Facebook, Twitter, WhatsApp, Line, Viber 4. App supports languages: Chinese, Traditional Chinese, English, Japanese, Korean, German, Russian, Spanish, Italian, French, Vietnamese, Portuguese, Arabic, Thai, Polish, Czech, Danish, Finnish, Dutch, Romanian, Malay, Swedish, Slovak, Turkish, Ukrainian, Hebrew, Greek, Hungarian, Hindi, Indonesian 29 languages 5. Watch languages: Chinese, Traditional Chinese, English, Japanese, Korean, German, Russian, Spanish, Italian, French 10 languages