1. Screen size: 1.69 inch display 2. Resolution: 240x280 3. Battery capacity: 180mAh 4. Waterproof grade: IP67 5. Strap: Silicone 6. System: Android4.4 and above / ios9.0 and above 7. Bluetooth: 5.0 8. Charging method: USB dedicated charging cable 9. Battery life: 30 days in standby, about 7 days in use 10. Charging time: about 2h 11. Support Simplified Chinese, Traditional Chinese, English, French, Russian, Indonesian, German, Italian, Czech, Japanese, Polish, Portuguese, Spanish, Arabic, Korean, Dutch, Hindi multi-lingual. 12. Support custom dial, weather forecast, step counting, heart rate, sleep, sedentary, mileage, blood oxygen, blood pressure, search, calories, Bluetooth, message push and other functions.