This is the back massager that scans the back, allowing the massage heads to go only as high or as low as needed. Sensors in the massager detect the body's height and determine the accurate curve of the back, personalizing the path taken by the two pairs of massage heads. While gliding along the back, the massage heads match their movements to the body's natural contour as they provide either a shiatsu-style pressure treatment or a rolling kneading motion. Users can also manually direct the heads to problem areas and engage heated pads in the massager for maximum penetrating relief. Controlled via a tethered remote, the massager offers three different massage modes with two levels of intensity, while an LCD panel displays settings and status. The seat cushion is detachable so the massager can provide optimal comfort in any chair or recliner. Plugs into AC. 30 3/4" H x 15 3/4" W x 4 1/4" D. (16 lbs.)