The EMG Retrainer is an EMG feedback unit designed for use with individuals with orthopedic or neuromuscular disabilities or chronic pain. This palm-sized, portable, dual-channel unit continuously measures and quantifies muscle movement and displays the results on the built-in flip-up liquid crystal display (LCD) and provides video and audio feedback. The system is menu-based for quick set-up and information for up to eight protocols can be stored. Targets can be set manually, by peak muscle activity, or by average muscle activity. A zoom feature concentrates the activity around the target. Additional features include automatic gain control and a built-in speaker. The set includes the unit, two leads, a Nylatex wrap (see also separate entry), a wrist strap, a belt clip, a carrying case, four disposable electrodes, and an instruction manual. OPTIONS: Vaginal probe, rectal probe, additional lead wire, additional carrying cas and belt clip, and earphones.