Type: HC-B02 Futures: Touch Screen Operation Automatically measures systole,diastole and heart pulse Display measuring date and time 60 memories with date/time recorded Rolling motor pump allows quiet inflation Power supply: 2 x AAA batteries Specifications: Oscillometric measuring method Measurement Range : Pressure : 0 - 220mmHg; Pulse : 40 - 160 beats/min Pressure Accuracy : +/- 3mmHg(cuff pressure) Inflation Method : Automatic Inflation (air pump) Rolling motor pump allows quiet inflation Operating Temperature:+10℃-+40℃ Humdity:85% or below