Fangrui Product Details 1. Gtr3 1.43 Inch Amoled Screen Fitness Tracker Smart Watch Support Heart Rate Monitoring 2. Chipset: Jl7013a6s 3. Memory: 640kb Rom, 256m Flash 4. Bluetooth Version: Ble 5.3 5. Sensor: Hx3695h Heart Rate Sensor, Sc7a20h G-sensor Ic 6. Screen: 1.43-inch Amoled, 466x466 Resolution, Full-screen Touch 7. Battery Capacity: 390mah 8. Standby Time: 45 Days 9. Working Time: About 7-15 Days 10. Charging Time: About 2 Hours, Magnetic Charging 11. Waterproof: 3atm 12. App: Runmefit 13. System Requirements: Android 7.0 Or Above, Ios 12.0 Or Above 14. Watch Ui Language Support: English, Simplified Chinese, Traditional Chinese, Russian, German, Italian, French, Polish, Portuguese, Spanish, Thai, Japanese, Dutch, Korean, Vietnamese, Malay, Indonesian, Romanian, Turkish 15. App Language Support: Simplified Chinese, Traditional Chinese, English, Japanese, Italian, German, Spanish, French, Russian, Dutch, Portuguese, Arabic, Indonesian, Korean, Thai, Polish, Vietnamese, Hindi, Turkish, Hebrew, Malaysian, Romanian, Mongolian, Slovak, Czech, Hungarian, Portuguese 16. Functions: Mal Health Management, 100+ Sports Modes, Activities, Bluetooth Calling, One-tap Measure, Heart Rate, Stress, Blood Oxygen, Sleep Monitoring, Breathe Training, Met,weather, Notifications, Music Control, Timer, Stopwatch, Calculator, Alarm, Flashlight, Find My Phone, Etc. 17. Body Material: Zinc Alloy 18. Wristband: Silicone 19. Packing List: Smartwatch (including Watchband) X 1, Magnetic Charging Cable X 1, User Manual X 1