Watch strap material: composite silicone Wrist circumference: 120-200mm Waterproof grade: IP67 Shell material: Zinc alloy Bluetooth: BLE5.2andBluetooth calling Operation mode: Full touch control Operating temperature: -5 C-45 C Battery capacity: 350mAh Charging method: magnetic suction charging Display: 2.0 inch high-definition full screen Product weight: 106g Accessories: watch, wristband, instruction manual, charging cable The watch supports languages such as Simplified Chinese, Traditional Chinese, English, Japanese, German, French, and Spanish Italian, Russian, Dutch, Korean, Thai. The APP supports languages such as Simplified Chinese, Traditional Chinese, English, Japanese, German, French, and Spanish There are dozens of languages including Italian, Russian, Dutch, Korean, Arabic, etc. Features: MAI Health Management System, over 100 sports modes, activity recording, Bluetooth calls -Key measurement, heart rate, pressure, blood oxygen, blood pressure, sleep, respiratory training, syphilis Weather, information, music control, timer, stopwatch, calculator, alarm clock, flashlight Find your phone, etc.