The Sys*Stim 208 is a one channel, low-volt stimulator with Surge, Pulse and Tetanize modes. It has easy-to-operate knobs that control stimulation intensity and frequency, a digital timer and a remote patient cut0off switch.; It is a small, portable stimulator with a clinical appearance. Weight: 1.4 pounds Dimensions: 2.5 in. (H) x 6 in. (D) x 8 in. (L) NOTE: This device is a controlled by the Food and Drug Admistration (FDA) and can only be sold to a licensed Purchaser or have a Prescription for Device. Verification must be provided to ship unit !!