Brand new condition, used only twice. Must sell, please contact. Will consider any reasonable offer...this item retailed for $137.14. TENS is a non-invasive, safe method to reduce pain, both acute and chronic. Transcutaneous Electrical Nerve Stimulation, more commonly referred to as a "TENS," is defined by the American Physical Therapy Association as application of electrical current through the skin for pain control (APTA, 1990). The unit is usually connected to the skin using two or more electrodes. Dual isolated channels. Intensity control is adjustable to 80 mA, 500 ohm load. Pulse width is adjustable from 30-260 micro-seconds. Wave form: Asymmetrical, bi-phase,square pulse. Modulation selector offers 5 modes of wave delivery, Normal, Burst and 3 Modulation modes. Metal belt clip. Comes complete with carrying case, 2 lead wires, 9-volt battery, 1 package of 4 pre-gelled electrodes and operating manual. kentucky