Watch Air 1.75 inch IPS Screen Smart Watch, Support Video ChatSIM Card Calling, Memory:4GB+64GB 1. Processor: SC9832+PAR2822 2. Operating memory: 1GB4GB 3. Built-in memory: 16GB64GB128GB 4. Front camera: 5 million camera 5. Battery: 850mAh 6. Network: All Netcom 4G-LTE TDDLTE+FDDLTE 7. System: Android 9.1 8. Location system: GPS+GLONASS 9. Bluetooth: Bluetooth 5.0 10. Material: plastic + silicone 11. Screen: 1.75-inch IPS high-definition screen, resolution 320*385 12. Charging time: 1.5 hours 13. Use time: 24 hours 14. Standby time: 7-10 days 15. Waterproof grade: IP68 (5ATM) 16. Phone card: Nano SIM card 17. Audio file format: MP3, WMA, Flac 18. Video file format: MP4 RMVB, RM 19. Image format: JPG, PNG, Gif 20. Data transmission: data cable 21. Languages: Simplified Chinese, English, Italian, French, German, Spanish, Portuguese, Russian, Japanese, Thai, Arabic, Korean, Greek, Korean, Dutch, Vietnamese, Filipino, Danish 22. Function: voice recorder, calendar face recognition, video chat, pedometer, heart rate measurement, message, map, blood oxygen monitoring, music synchronization function, weather, alarm clock, Google APP, sports mode, etc. 23. Watch size: 48.5x41mm 24. Watch thickness: 15mm 25. Length: 265mm 26. Strap: 98x125x20mm 27. Weight: 90g