GTR3 1.43 inch AMOLED Screen Fitness Tracker Smart Watch Support Heart Rate Monitoring 1. Chipset: JL7013A6S 2. Memory: 640KB ROM, 256M FLASH 3. Bluetooth version: BLE 5.3 4. Sensor: HX3695H heart rate sensor, SC7A20H G-sensor IC 5. Screen: 1.43-inch AMOLED, 466x466 resolution, Full-screen touch 6. Battery capacity: 390mAh 7. Standby time: 45 days 8. Working time: about 7-15 days 9. Charging time: about 2 hours, magnetic charging 10. Waterproof: 3ATM 11. APP: Runmefit 12. System requirements: Android 7.0 or above, IOS 12.0 or above 13. 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 14. 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 15. 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. 16. Body material: Zinc Alloy 17. Wristband: Silicone 18. Packing list: Smartwatch (including watchband) x 1, Magnetic charging cable x 1, User manual x 1