Large LED Screen Display amp; Voice Broadcast Function The wrist blood pressure cuff has a large screen with large subtitles which looks very clear, The measurement result will be broadcast by voice large LED screen Simultaneous display the blood pressure, pulse rate, time and date with large type, which makes it very easy to read even in the dark, It's a very good home blood pressure monitor. Rechargeable Blood Pressure Cuffs for Home Use : built-in high capacity rechargeable lithium battery which can be used continuously for 25-30 days after fully charged and included USB cable, just connect the digital blood pressure monitor with any USB power source like your power bank or computer, no need to buy extra battery to replace, that is very convenient and money saving. It is very suitable for travel, business trip and home useblood pressure wrist cuff can monitoring your blood pres Ccurate & Reliable Blood Pressure Machines for Home Use and Irregular Heartbeat Detector : This automatic blood pressure cuff clinically tested and recommended by doctors for its reliability and accuracy. And this automatic blood pressure monitor can not only monitor your blood pressure, but also monitor your pulse rate and the irregular heartbeat.