Vantage Pain Reliever Digital TENSVantage Pain Reliever Digital TENS relieves aches & pains including shoulder pain, hand pain, back pain, joint pain & leg pain. TENS stands for Transcutaneous Electrical Nerve Stimulation & is recognised as a safe method of easing pain & is regularly recommended by doctors, physiotherapists & pharmacists throughout the UK. It works by passing harmless electrical signals into the body from the gel pads which stimulates production of endorphins, the body's natural painkiller, & blocks pain signals that are normally transmitted from the damaged area to the nerve fibres in the brain. Vantage Pain Reliever Digital TENS is lightweight & portable & as it is natural can be used alongside medication. It has 6 programme settings so you remain in control at all times.