1. App operating system: IOS8.0 or above, Android 4.4 or above 2. Waterproof rating: IP67 3. Screen: 1.54 inch TFT, resolution: 240*240 4. Bluetooth version: BLE 5.1 5. Battery capacity: 280 mAh 6. Standby time: 5-7 days 7. Charging method: magnetic data cable 8. Charging time: about 2 hours 9. Strap material: silicone strap 10. APP supported languages: Chinese, simplified Chinese, traditional Chinese, English, German, Russian, Japanese, French, Korean, Portuguese, Spanish, Italian, Persian, Vietnamese 11. Watch languages: German, English, Italian, Spanish, French, Japanese, Russian, Portuguese 12. Main functions: making and receiving calls, music playback, heart rate monitoring, blood pressure monitoring, step counting, distance, calories, sleep monitoring, stopwatch, countdown, call reminder (caller number/name), message reminder, alarm clock reminder, sedentary reminder , connect to TWS, audio, remote camera, etc. 13. Host size: 50x39x14.6mm, overall size: 260x39x14.6mm 14. Weight: about 60g