1. Display size: 1.3 inch IPS 2. Resolution: 240*240 3. Polymer lithium battery: 230mA 4. Use time: 3-5 days 5. Standby time: 30 days 6. CPU: HS6621 7. Bluetooth built-in: dual Bluetooth 5.0, 3.0 8. System version support: Android 5.1 and above, IOS 8.0 and above 9. Bluetooth connection distance of mobile phone: 10-15 meters 10. Charging method: magnetic type 11. Waterproof rating: IP68 12. Functions: Bluetooth call, step counting, calories, distance, multi-sports mode, running track, call reminder, message reminder, sedentary reminder, alarm clock reminder, shake and take photos, heart rate monitoring, blood pressure monitoring, blood oxygen monitoring, sleep Monitoring etc. 13. APP interface support languages: Chinese, Traditional Chinese, English, French, German, Japanese, Spanish, Italian, Russian, Czech, Portuguese, Turkish, Greek, Vietnamese, Thai, Arabic, Polish Language, Dutch 14. Bracelet push notification support languages: Chinese, Traditional Chinese, English, French, German, Japanese, Spanish, Italian, Russian, Czech, Portuguese, Turkish, Greek, Vietnamese, Thai, Arabic , Polish, Dutch 15. The bracelet UI supports languages: Chinese, Traditional Chinese, English, French, German, Japanese, Spanish, Italian, Russian, Czech, Portuguese, Turkish, Greek, Vietnamese, Thai, Arabic, Polish, Dutch 16. Wristband size: width 22mm, body size: 45.5x11mm