TENS Current stimulation is used 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. EMS for Relaxation of Muscle spasm Prevention or Retardation of disuse atrophy Increasing local blood circulation Muscle re-education Immediate post-surgical stimulation of calf muscles to prevent venous thrombosis Maintaining or increasing range of motion Technical Specifications: No. of Channels: 4, 8 Electrodes Waveform: Symmetrical Bi-Phasic Square TENS Modes: Burst, Modulation and Conventional EMS Modes: Conventional, Synchronous and Alternate Selections: Pulse Rate: 1-120Hz Pulse Width: 50-250 micro seconds (TENS), 250-400 micro seconds (EMS) On Ramp: Adjustable 1-9 seconds Cyclic On time: 1-30 seconds Cyclic Off Time: 1-30 seconds Timer: 1-60 min (1min/step) Power Source: 9V Battery / Adapter (Wall Type) Dimension: 15.5 x 8.5 x 3 cm Weight: 140 Grams / 0.30 lbs