This Transcutaneous Electrical Nerve Stimulation (TENS) Unit can deliver an impressively successful treatment for chronic and mild pain sufferers. TENS units are used around the world by medical practitioners, physiotherapists, by pain clinics, various health centres' and are used by athletes who have incurred injuries. This powerful little TENS unit can relieve pain very effectively and can be left on for many hours if necessary. Pain killers and anti-inflammatories effect your entire system causing undesirable side-effects whereas this wonderful little TENS unit gives you pain relief only where and when you need it the most. The compact size of this TENS unit means that you can gain immediate relief from pain wherever you are whether it be at home or at work or when travelling.