1. Screen size: 1.3 inches 2. Charging: USB interface plug-in charging 3. Bluetooth: 4.0 4. Touch: Full screen touch 5. Support Android 4.4 and above, Apple IOS9.0 or above 6. Charging interface: magnetic 7. Waterproof rating: IP67 8. Battery capacity: 180MAH 9. Standby time: 20 days or so, working time: 10 days or so 10. Supported languages: Chinese, Traditional Chinese, English, Korean, German, Spanish, Japanese, French, Italian, Russian, Portuguese, Arabic, Ukrainian 11. Function: heart rate detection blood pressure detection, blood oxygen detection, time and date display, step counting, calories, distance with screen display, sleep monitoring (sleep time, sleep quality), call reminder, SMS, QQ, WeChat message content push, WeChat Sports access, sedentary reminder, alarm reminder, etc.