Product Parameters: 1. Model: AK88 2. Dimensions: 44*38*12mm 3. Weight: 50g 4. Case Material: zinc alloy 5. Screen: square IPS screen 6. Screen size: 1.75inch 7. Resolution: 320X385 8. Chip: MTK2502C 9. G-sensor: SC7A20 10. Memory: 128MB 11. Bluetooth: 3.0+4.0 12. Battery Capacity: 220mAh 13. Charging Way: by charging clip 14. Charging Time: 1.5h 15. Battery Life: 3 days 16. APP:M2 Wear 17. System requirements:Android 5.0 & IOS 9.0 and above Features: 1. Keep an eye on your health: Sleep tracker, heart rate/blood oxygen monitoring. 2. A good helper for workout: Pedometer, distance/calories burned, sports modes. 3. A good helper for daily life: Bluetooth phone calls, sync notifications, check messages, alarm, camera remote, calculator, clock, calendar, raise wrist to wake watch, etc. Languages: App languages: English, Arabic, Persian, Thai, Vietnamese, French, Czech, Russian, Spanish, Portuguese, Greek, Turkish, Polish. UI languages: English, French, Spanish, Danish, Polish, Portuguese, Korean, Japanese, Filipino, Italian, German, Indonesian, Czech, Hungarian, Vietnamese, Turkish, Russian, Arabic, Persian, Hebrew, Thai, Greek, Simplified Chinese, Traditional Chinese, Swedish, Romanian, Hindi, Bengali. Package List: smart watch*1 charging cable*1 user manual*1"