Large LCD Display with Three Backlight - the wrist blood pressure monitor has a large screen with large subtitles which looks very clear, yet it is very friendly for older people. The three backlight (green/ yellow/red)makes it very easy to read even in the dark, parents can easily know their blood pressure level according to the monochrome light display on the screen. Rechargeable Digital BP Cuff - built-in high capacity rechargeable lithium battery and included USB cable, just connect the digital blood pressure monitor with any USB power source like your power bank or computer, full charge 40 minutes, no need to buy extra battery to replace, that is very convenient and money saving. 198 Group Memory Mode & 2 Users Compatible - two user capable, conveniently toggle with 2 users to record measurement separately with the 99 memory storage. After measurement, the digital upper arm blood pressure monitor will store each result with time and date. Accurate & Reliable wrist Blood Pressure Monitor - BP machine clinically tested and recommended by doctors for its reliability and accuracy. Durable and long lasting digital wrist blood pressure monitor makes it the perfect health care device for your family. Easy To Use Automatic BP Machine - simply press the ON/OFF button to start the measurement. Or you can set the user, year, date and hour according to the user manual of this automatic blood pressure cuff. No other complicated setups required.