HT15 1.85 inch Silicone Band IP67 Waterproof Smart Watch, Support Bluetooth Calling Sleep Monitoring 1. Support brightness adjustment, find mobile phone, do not disturb mode, time display, Bluetooth call, watch phone book, exercise monitoring (record daily steps, exercise distance, calories burned), sleep monitoring (automatic monitoring of falling asleep, waking up time and sleep Quality), heart rate detection, blood pressure detection, respiratory exercise, exercise mode (18 types), alarm clock, sedentary reminder, call reminder, SMS reminder, QQEmailfacebooktwitterwhatsapplineskypeWeChat and other reminders, stopwatch , remote camera (button or shake to take a photo), music control (can control mobile phone music previousnext song, pause, start, volume), weather 2. CPU: Realtek8762DT+HN333 3. RAM: 128Mb, ROM: 256kb 4. Heart rate sensor: HX3605 5. Acceleration sensor: SC7A20 6. Bluetooth: BLE5.0 7. Display: 1.85 inch 240x280 TFT display 8. Vibration motor: 15000+-2500 rpm 9. Physical button: 1, with encoder 10. Touch: full screen touch 11. Battery: 260mah polymer battery 12. Charging interface: 2PIN thimble interface 13. Watch firmware languages: Simplified Chinese, Traditional Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Arabic, Dutch, Italian, Czech, Greek, Hebrew, Indonesian , Malay, Polish, Thai, Vietnamese, Finnish, Romanian, Turkish, Croatian 14. App language: Simplified Chinese, Traditional Chinese, English, German, Russian, Spanish, Portuguese, French, Japanese, Arabic, Dutch, Italian, Czech, Greek, Hebrew, Indonesian , Malay, Polish, Thai, Vietnamese, Finnish, Romanian, Turkish, Croatian 15. Support mobile phone system: Android 5.1 or IOS 8.2 or above system that supports Bluetooth 4.4 BLE 16. Charging time: 2 hours, battery life: 5-7 days 17. Bluetooth distance: 10m 18. Waterproof grade: IP67 19. Material: Strap: Silicone Dial: Aluminum alloy 20. Size: 45.7x38.7x11mm 21. Weight: 41g