Product Parameters: 1. Model: DT100Pro Max 2. Dimensions: 44*38*11mm 3. Case Material: zinc alloy 4. Strap Material: silicone 5. Screen: TFT 6. Screen size: 1.8inch 7. Resolution: 320*385 8. Chip: RTL8762DK 9. Heart Sensor: BD1662_I2C 10. BT: 5.0 11. Battery Capacity: 280mAh 12. Charging Way: wireless charging 13. Charging Time: about 3h 14. Battery Life: 3-5 days 15. Standby Time: 15-25 days 16. Waterproof: IP68 17. System requirements:Android 4.4+ / IOS 10.0+ APP:Wearpro Features: 1. Keep an eye on your health: Heart rate monitor, sleep tracker, period tracker. 2. A good helper for workout: Record exercise data, map routes, sports mode. 3. A good helper for daily life: BT phone calls, sync notifications, BT music, camera remote, weather, find my phone, lock screen password, calculator, split-screen, shortcut widget, weather, alarm, 7 UI styles, breathing exercise, custom watch faces, stopwatch, brightness adjustment, voice assistant, etc. 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 IP68 waterproof, please do not suggest put in water for long time and do not wear to bath, swim, shower. Languages: App languages: Chinese, Traditional Chinese, English, Korean, German, Spanish, Japanese, French, Italian, Russian, Portuguese, Arabic, Ukrainian, Thai. UI languages: English, Chinese, Traditional Chinese, Danish, Greek, Latin, Romanian, Turkish, Hebrew, Czech, Polish, Spanish, German, Russian, Portuguese, French, Japanese, Italian, Vietnamese, Korean , Arabic, Persian. Package List: smart watch*1 charging cable*1 user manual*1