Clinically validated to the latest, most stringent, ESH-2010 International Protocol and recommended for clinical and personal use. Uses a slimfit preformed universal arm cuff for both standard and large arm circumferences (22 to 43cm). No need for two separate cuffs, one size fits all. Controlled inflation pressure. The arm cuff only inflates to a pressure sufficient to obtain the Systolic Pressure reading, thereby avoiding discomfort caused by over inflation. Displays result on WHO classification chart to enable easy comparison with recommended values. Irregular Pulse Rhythm displayed if detected. Monitor calculates and displays "Pulse Pressure". 2 memory banks each saving 60 readings and averaging the saved results.