Futures: Model A:Voice report for measuring results. Large digital display Screen touch switch Automatically measures systole,diastole and heart pulse Display measuring date and time Can memory 60 datas for recall (including date and times) Power supply: 2 X AAA batteries Unit size: 7.5 x 7.5 x 2.5 cm 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