Features: Three-Color LED Display Screen: Different colors indicate whether the user's reading is normal. Readings are more intuitive Smart Touch Button - One Button Operation: Touch the switch to get accurate readings automatically without further operation Voice Reporting & LCD Display: Clear voice broadcast and large LCD display during measurement can assist the elderly Rechargeable: This device features a built-in rechargeable battery charged via USB cable, similar to a mobile phone Easy to Use: Automatic blood pressure monitor provides clear, accurate data with just one button press in under 30 seconds Notice: 1. Actual color may be slightly different from the image due to different lighting conditions 2. Please allow 1-3 cm deviation due to manual measurement Power Supply: Internal 3.7V Lithium Battery Accessories: Main unit, user manual, storage box, data cable Rated Voltage: DC5V Power: 1.5W Current: 300mA Load: 16 ohms (wristband specifications) Package List: 1 x Blood Pressure Monitor