Six-Pack Pro: TENS & EMS unit for pain relief, stress, and muscle stimulation. Built-in lithium battery, rechargeable through USB connection. Comes with 6 single Gel Pads that place over each Six-pack Pro electrode. Has 5 modes: s***ing/EMS/tapping/acupuncture & combination. Also has 15 levels to increase the intensity of each mode. The device is a symptomatic treatment and suppresses the sensation of pain. Six-pack Pro places on to your abdomen. Comes with all accessories, still in box. Brand New, never been used. Six-pack Pro is priced at $699.00 . Asking $400.00 for it and my price is negotiable.