Measures systolic and diastolic blood pressure, as well as pulse. Large, backlit LCD screen. Position Assistant corrects your arm position for accurate results. Measures 3.3 by 2.5 inches. Carry bag included. 2 users can store up to 60 records each and view their own 3-day average. The adjustable cuff fits most adult users, accommodating wrist circumferences from 13.5 cm to 21.5 cm. Irregular heartbeat sensor. 2 AAA batteries included. Cleared for use as a medical device.