EMS Foot Massager - Electrical Muscle Stimulation

I'm selling an EMS Foot Massager that uses electrical muscle stimulation. It sends electrical pulses from a detachable control unit to simulate tapping, kneading, and stroking on your feet, Achilles tendons, and calf muscles. Through EMS technology, it's designed with electrodes to stimulate your feet, ankles, Achilles tendons, as well as calf muscles for muscle contraction and relaxation, which primarily boosts blood circulation. It comes with the box and instructions