Application: Relaxation of muscle spasm Prevention or Retardation of disuse atrophy Muscle re-education Immediate post-surgical Stimulation of calf muscles to Prevent venous thrombosis Maintaining or increasing range of motion of joints Technical Specifications: No. of Channels: 2, 4 Electrodes Waveforms Asymmetrical Bi-Phasic Wave Selections: Pulse Rate: 5, 30, 100 Hz Contraction Time: 1-30 sec Relaxation Time: 1-45 sec Ramp up/down: 1, 3, 5 sec Power Source: 9V Battery/Adaptor