The GV 350 High Volt Pulsed Stimulator is a two channel device that delivers full powered twin peak stimulation. The GV 350 High Volt Pulsed Stimulator has alternating or continuous stimulation, a timer for desired treatment periods and fully adjusted pulse rate. Four AA batteries, or an optional Wall Adaptor powers the device. Specifications Size Size 2.75 x 4.5 x 1.5 Weight 8.1oz Channels 2 active outputs, 1 dispersive return Waveform Twin Peak monophasic HVPS Pulse Rate adj. 1 100 Hz Pulse Width Interpulse intervals of 100 microseconds. 5 microseconds at 50% of peak voltage Polarity Switch Positive and Negative of active electrodes Stimulation Continuous or Alternating alternates between channel one and channel two over five second intervals Timer 15, 30, 60 minutes Indicator Light Two, one for each active output Output Voltage 0 350 volts adjustable Intensity adj. 0 700 mA peak Power Supply 4 AA Batteries or Optional Medical Grade Wall Adaptor 1 Each / Each