Richmar DE5030(32) Portable Dual Channel Muscle Stimulator, Complete

Variable pulse: rate 5, 30, 100 (Hz), width 250 (us). Variable ramp time: 1, 3, or 5 S. Variable contraction/relaxation time. Wave: 3-types. Includes carry case, stimulator, lead wires, 4 self stick electrodes, 9V battery, and instructions.