FDA approved and CE certified Measuring during inflation technology,quick and accurate Easy-to-read large LCD display 5.51X1.41 inch,4 grades of classification for blood pressure Remembers up to 60 records,displays systolic,diastolic pressure and pulse rate Irregular heartbeat detector,optionally displays average of last 3 readings 1-Year Warranty：Money-back satisfaction guarantee Note : Batteries and AC adapter are not included. AC adaptor available separately Important Note -Note that two cuff sizes are available, and be sure to order the correct size for your upper arm measurement -Apply cuff as illustrated in the manual and tighten firmly before starting the reading.