Dual isolated channels Pulse amplitude adjustable from 0-80 mA, 500 ohm load Pulse frequency adjustable from 2-150 Hz Pulse width is adjustable from 30-260 micro-seconds Wave form: asymmetrical, bi-phase, square pulse Modulation selector offers wave delivery in Normal, Burst or Modulation modes Plastic belt clip Comes complete with carrying case, 2 lead wires, 9-volt battery, 1 package of 4 pre-gelled electrodes and operating manual