Fangrui Product Details 1. Gt20 1.69 Inch Tft Screen Ip67 Waterproof Smart Watch, Support Music Control Bluetooth Call Heart Rate Monitoring Blood Pressure Monitoring, Style:silicone Strap 2. Compatible System: Android 5.0 Or Higher Ios9.0 Or Higher 3. Flash Memory: 512kb+16m 4. Screen Size: 1.69 Inch Tft Screen, Pixel: 240*280 5. Bluetooth: Bt 5.0 6. Capacity: 3.7v180mah 7. Charging Method: Charging Clip 8. App Language: Support English, Simplified Chinese, Traditional Chinese, Dutch, Russian, French, German, Portuguese, Spanish, Turkish, Japanese, Polish, Arabic, Malaysian, Thai, Czech, Slovak 9. Watch Languages: Simplified Chinese, English, French, Spain, Portugal, Russian, German, Netherlands, Turkey, Malaysia, Poland, Czech Republic, Slovakia 10. Functions: Step Counting, Distance, Calories, Sleep Monitoring, Heart Rate Monitoring, Blood Pressure Monitoring, Blood Oxygen Monitoring, Search Device, Bluetooth Call, Music Control, Sms Reminder, Alarm Clock Reminder, Sedentary Reminder, Multi-sports Mode, Etc. 11. Waterproof Rating: Ip67 12. Charging Time: 1.5 Hours 13. Life Time: 3 Days 14. Appearance Material: Zinc Alloy + Abs 15. Wristband Size: Total Length 226.6mm, Width 20mm 16. Product Size: 51x40x12mm