EMS FOOT MASSAGER Electrical Muscle Stimulation by sending an electrical pulse from the detachable control unit, it can simulate the feeling of tapping, kneading and stroking on your feet, ankles, Achilles tendons and calf muscles. Through EMS (Electrical Muscle Stimulation) technology, this product is designed with a foot mat as electrodes to stimulate your feet, ankles, Achilles tendons as well as calf muscles for muscle contraction and relax which primarily boost blood circulation. Box has some wear but item is new and intact. 6 MODES 9 INTENSITY LEVELS 15 Minute AUTORUN