The Panasonic EW3152W has no Cuff to Wrap¿Just Insert Your Arm. Elbow support and adjustable angle assures correct and comfortable use.Body movement detector eliminates inaccurate readings. The monitor lights up if movement is detected, alerting you to stop moving or your reading will not proceed. Automatic memory feature allows you to capture 90 readings (x 2 persons), and save them to track the readings over time. The EW3152W utilizes a 3-color lighting system to indicate if your reading falls into a Hypertension, Pre-hypertension or Normal Range. With just one touch of the start button, the monitor auto inflates for quick, easy measurements. The EW3152W comes with four AA Alkaline batteries, and includes an AC adaptor for ¿in the box¿ power.The large LCD display panel shows both blood pressure readings and pulse rate displayed simultaneously with an orange backlight for easy visibility. Sensors detect and isolate only essential pulse oscillation through digital filter technology, eliminating other noise factors, leading to quick and reliable measurements. Call our 24-hour, toll-free hotline run by Panasonic at 1-800-338-0552, and if there is a problem, we will exchange the product hassle free!