Interferential Current Stimulation for symptomatic relief and management of chronic and/or as an adjunctive treatment in the management of post-surgical and post-traumatic acute pain problems. Muscle Stimulation (EMS) for Relaxation of Muscle spasm, prevention or retardation of disuse atrophy, muscle re-education. Technical Specifications: No. of Channels: 2, 4 Electrodes Waveform: Symmetrical squire wave / Symmetrical Bi-Phasic square wave Modes: IFT & EMS Frequency Carrier : 4000 Hz Sweep: 1-4000 Hz Programs: Preset Six Programs, Customized One Program Selections Selectable Pads Position: 2 Pole or 4 Pole Treatment Time: 1 to 30 minutes or continuous Frequency: 1 to 400 Hz Power Supply: 9V Battery / Adapter