This easy-to-use, portable Electrical Muscle Stimulator (EMS) is a great way to enjoy drug-free pain relief. It comes with 4 adhesive pads (40 uses) and has 8 different programs and intensity levels for custom treatments. Great for men and women, it's perfect to use on your back, shoulders, legs and arms, and produces a stimulating, pulsating massage that helps enhance circulation. The easy-to-use controller features 3 different types of massage (kneading, modulation and tap), as well as 8 programs and intensity levels. Req. 2 "AAA" batteries (sold separately). Plastic and electronics with a large LCD display. 5"L x 3 1/2"W x 2"H.