Specifications and features shown in the picture: Design: It has two openings/cavities designated for placing the feet or the calf (back leg muscles). Control Unit: Equipped with a wired remote control that contains multiple control buttons (On/Off button, Reverse rotation direction change, ECO power saving mode, and speed/mode control). Method of Operation: It operates by electricity via a power adapter (with a three-pin plug), and provides massage with rollers and rotating nodes (Shiatsu/Kneading) designed to relieve stress and stimulate blood circulation.