Homedics Automatic Arm Blood Pressure Monitor with Smart Measure Technology, Irregular Heartbeat Detector & Two Arm Cuffs. Features include: Smart Measure Technology for clinically proven accuracy; Includes 2 arm cuffs to fit virtually all arm sizes; Jumbo digits for an easy read display; Risk Category Index compares readings to criteria established by the U.S. National Institutes of Health; 120 Memory recall/2 users; Date & time stamp and memory averaging function. 4-"AA" batteries included. Blue & Dark Grey.