Parameters: 1. Model: GT50 2. Dimensions: 50*40*11.8mm 3. Screen size: 1.69'' 4. Resolution: 240*280 5. Chip: FR2506 6. Heart Sensor: SC7R30 7. Flash Memory: 64M 8. BT: 3.0/4.0 9. Battery Capacity: 180mAh 10. Charging Time: 1.5 hours 11. Battery Life: 7-10 days 12. Standby Time: 25-30 days 13. Waterproof: IP67 14. System requirements: Android 5.0 and above / iOS 9.0 and above APP: M2 Wear Features: 1. Keep an eye on your health: Heart rate/blood pressure/blood oxygen monitor, sleep tracker. 2. A good helper for workout: Steps, distance, calories burned, port modes. 3. A good helper for daily life: NFC access control, BT phone call, sync notifications, music remote, music playback, custom faces, alarm reminder, sedentary reminder, find my phone, stopwatch, calculator, games, etc. Languages: App languages: English,Dutch, Russian, French, German, Portuguese, Spanish, Turkish, Japanese, Polish, Arabic, Malay, Thai, Czech, Slovak, Filipino, Indonesian, Ukrainian, Vietnamese, Italian ,Hindi. UI languages: English,Italian, Portuguese, Polish, Spanish, French, Greek, Persian, Hungarian, Czech, Russian, Turkish, Dutch, German, Thai, Vietnamese, Indonesian, Malay, Filipino, Arabic, Finnish, Ukrainian. Note: 1.The principle of smartwatch measurement is completely different from that of medical equipment. It is only for sports and fitness reference, thank you. 2.After receiving the watch, please use the 5V 1A charging adapter to charge the watch for more than 2 hours. 3.Please scan the QR code in the manual to download the APP before use 4. Please contact us to view more details and actual photos before purchasing. 5. We support wholesale & dropshipping, please contact us directly for more details, thanks. 6.This watch is IP67 waterproof, please do not suggest put in water for long time and do not wear to bath, swim, shower. Reminder of NFC function: 1. The NFC of this watch only supports as IC door cards with a frequency of 13.56MNZ (applicable to 80% on the market), does not support other functions. 2. The mobile phone that supports NFC function can directly read the unencrypted door card and then write it to the watch. 3. The fingerprint lock enters the adm inistrator mode-add-card-write. 4. Encrypted access control of the community needs to be written in the community property management office. Package List: smart watch*1 charging cable*1 user manual*1