Delivers targeted, effective and safe relief for pain associated with sore and aching muscles in the shoulder, waist, back, neck, upper extremities (arm) and lower extremities (leg). It's simple, easy-to-use where it hurts and compact enough to wear discreetly under clothing. Lightweight, flexible design shapes to almost any body part. Simply increase or decrease stimulation with the press of a button. TENS therapy has been proven effective by the American Physical Therapy Association. Pre-programmed. 20-minute treatment. Latex-free. FDA cleared class II medical device. Natural, drug-free pain relief. Includes: mini TENS device, electrode gel pads, batteries, instructions.