TENS Socks Electronic Pulse Massager package includes: TENS device, 2 socks, 2 cables for socks, 8 Refill pads, 2 cables for pads, 4 batteries, and an operating manual. A device is normally only available in sessions with a physical therapist or chiropractor. It is a compact, portable, micro-computer-controlled device. It may help temporarily relieve pain associated with sore and aching muscles in the shoulder, waist, back, neck, arm, and leg due to strain from exercise or activities.