1. Waterproof level: IP67 2. Compatible system: Android 5.0 and above, iOS9.0 and above 3. Function: blood oxygen, heart rate, step counting, sleep monitoring 4. Screen size: 1.45-inch color screen, TFT material, 172x320 5. Bluetooth version: 5.0 6. Battery type: high density polymer lithium battery 7. Battery capacity: 120mAh 8. Charging method: Magnetic suction 9. Charging time: about 2 hours 10. Battery life: 3-5 days of use, 10 days of standby 11. Appearance material: zinc alloy middle frame, plastic bottom case, silicone strap 12. Product language: Watch supported languages (Simplified Chinese, Japanese, English, French, German, Italian, Spanish, Russian, Portuguese, Polish, Malaysian); APP supported languages (Simplified Chinese, Traditional Chinese, Japanese, English, French, German, Italian, Spanish, Russian, Portuguese, Korean, Malay)