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EMPI BRAND TENS PAIN CONTROL UNIT PROFESSIONAL QUALITY Stimulates nerves to control pain. Had to final have back surgery so I don't need it and used it little. Control unit, belt, lead wirs, electrodes. New unpackaged (8) 4 x 7 pads and (24) round pads in count of 4 each. CLEAN hardly used. Purchased through professional. Can check out price (new $250.00) on Amazon. It works fine just I needed more internal repairs.