FeaturesThree-Color LED Display Screen Different colors indicate whether the user's reading is normal. Reaings are more intuitiveSmart Touch Botton-One Button Operation Touch the switch, then you will get the accurate-readings automatically without further operationVoice Reporting LCD Display Clear voice broadcast and large LCD display during the measurement can prevent the elderly from being incapableRechargeable Don't worry about the blood pressure monitors watch dying on you from a low battery. This monitors is chargeable by a USB cord, just like a cell phone.Easy to Use Automatic blood pressure device will give you clear, accurate-data by pressing just one button in less than 30 second.Notice1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementPower Supply Lithiums BatteryAccessories Main unit, manual, storage box, data cableRated Voltage DC5VPower Supply Internal 3.7V Lithiums BatteryPower 1.5WCurrent 300mALoad 16 ohms (wristbands specifications)Package List1x Blood Pressure Monitors