KD99 Ultra 1.99 inch IPS Screen Smart Watch, Support Heart Rate & Blood Oxygen Monitoring Sports Modes 1. Main chip: BT8918B 2. Memory: 8M bit + 32M bit 3. Bluetooth: V4.05.0 4. Sensor: 3-axis G-sensor 5. Display: 1.99-inch screen 320x380 resolution 6. Battery type: 180mAh wireless charging 7. Endurance time: 7-15 days of standby, normally for about 3-5 days 8. Waterproof level: living waterproof 9. Support App: HryFine 10. System requirements: above Android5.0 or iOS10.0 11. UI language: English, French, Arabic, German, Indonesian, Italian, Malaysian, Persian, Spanish, Russian, Vietnamese, Czech, Turkish, Polish, Portuguese, Greek, Filipino, Thai, Chinese, Dutch, Finnish, Ukrainian, Swedish, Hungarian 12. APP supports language: English, French, Arabic, German, Indonesian, Italian, Malaysian, Persian, Spanish, Russian, Vietnamese, Czech, Turkish, Polish, Portuguese, Greek, Filipino, Thai, Chinese, Dutch, Finnish, Ukrainian, Swedish, Hungarian 13. Functions: voice call, small games, intelligent split screen display, customized dial, sports modes, water drinking reminder, breathing training, sleep monitoring, heart rateblood pressureblood oxygen monitoring, call reminder, message reminder, sedentary reminder, alarm clock, stopwatch, calculator, looking for the bracelet, raise to wake 14. Material: zinc alloy body+IML bottom shell+silicone watch band