QS16Pro 1.69-Inch Health Monitoring Waterproof Smart Watch, Supports Body Temperature Detection, Color: Silver Gray 1. Material: PC+ABS, TPUsteel, electronic components 2. Functions: multiple sports mode tracking, pedometer, heart rate monitoring, blood pressure measurement, sleep monitoring, blood oxygen detection, smart reminder, remote selfie, information push, call notification 3. Applicable system: Android 4.4 and above, IOS 8.0 and above 4. Supported languages: Russian, Indonesian, German, Italian, Czech, Japanese, French, Polish, Simplified Chinese, Traditional Chinese, English, Portuguese, Spanish, Arabic, Korean, Dutch, Indian local language 5. Screen size: 1.69 inches (IPS screen) 6. Screen resolution: 240 x 280pixel 7. Bluetooth version: 5.0 8. Wireless distance: 5-10m (inclusive) 9. Body memory: RAM: 160kB+ROM:384kB+FLASH:64Mb+ Main frequency: 40Mb 10. Battery capacity: 180mAh lithium battery 11. Charging time: 3 hours 12. Working time: 7-10 days 13. Standby time: 12-15 days 14. Operation mode: touch + button 15. Waterproof grade: IP67 16. Equipped with infrared sensors to accurately measure blood oxygen concentration 17. Using 1.69-inch large screen + high-hardness glass, wear-resistant and clear