HAMTOD GT98 Headphones Smart Watch,1.53 inch, Support Bluetooth Call NFC Heart Rate Hardware parameters: 1. Main chip: JL7013+TWS 2. Memory: 128M 3. Accelerometer: SC7A20 4. Screen: HD 5. Screen size: 1.53 inches 6. Resolution: 360 x 360 7. Blood oxygen: dynamic measurement 8. Dynamic heart rate: exercise heart rate curve, 3605 9. Touch: screen touch 10. NFC: support 11. Charging (input): magnetic data cable charging, 5V250mA 12. Watch Bluetooth: Bluetooth LE 5.2 13. Output: 5V60MA, watch battery: 400 mAh 14. Headphone Bluetooth: Bluetooth5.0, support iOS and Android systems 15. Headphone detection: dynamic charging detection display status, indicator light 16. Headphone button: Support touch buttons, previous song, next song, answerhang up 17. Headphone battery: 30 mAh 18. Headphone shelf time: 5 hours System parameters: 1. Android system: Support Android 4.4 and above 2. iOS system: iOS9.0 and above 3. UI style: 8 styles 4. Sedentary reminder: call remindertext message reminder, Android, IOS push call and message content 5. Other push: SMS, WeChat, QQ, Twitter, Facebook and other 10 kinds of push, all push can be selected 6. WeChat Sports: Join WeChat Sports Ranking (customizable private WeChat public account) 7. Dynamic heart rate: dynamic heart rate bar chart display and analysis 8. Remote control photo taking: click, shake 9. Watch face selection: watch face selection, APP custom watch face 10. Remote control music: control mobile phone player pause previous song, next song 11. Watch supported languages: Chinese, Traditional Chinese, English, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italian, Portuguese 12. APP supported languages: Arabic, Bulgarian, Czech, Danish, German, Spanish, Finnish, French, Hindi, Croatian, Indonesian, Italian, Japanese, Korean, Norwegian, Dutch, Polish, Pashtun, Portuguese, Romanian, Russian, Swedish, Thai, Turkish, Ukrainian, Vietnamese, Simplified Chinese, English, Traditional Chinese