The Dr Physio Electronic Pulse Massager uses electrical waves to target the site of aches and pains. Also Eases back pain, arthritis, inflamed discs & joints or shoulder tension. Get quick, effective relief from muscle, joint and nerve pain, without reaching for that bottle of pillThe reusable gel pads attach easily to tricky joint areas. The muscle stimulator sends powerful electrical pulses through the central nervous system, effectively blocking pain receptors - the same way a strong painkill