Painmaster is a revolutionary Micro Current Therapy (MCT) Patch that is drug free, non-invasive and proven to control pain and promote healing. Patented and approved by the FDA. It conveniently goes everywhere you go, for day after day effective treatment. The patch can be worn under clothing and during everyday activities, sports or exercise. Easy application takes just a few seconds Helpful in targeting multiple areas of pain and releasing muscle tension Internal power supply allows up to 300 continuous hours of use without side effects.