Rio Tens Boost Machine.
TENS Boost 2200 drug-free pain relief. TENS (Transcutaneous Electrical Nerve Stimulation) works by transmitting safe, low frequency electrical pulses to localised nerves. These pulses stimulate the release of endorphins, which are the bodys own natural pain relieving hormones to greatly reduce or eliminate the pain sensation. Fully programmed with adjustable pulse width and pulse rate for total control and flexibility.Hand held instant boost but Follow this link for further information on this product "Rio Tens Boost Machine.", at the argos website.