Size: 3.25" x 2.25" x 1 5/8" (82 mm x 70 mm x 45mm) Weight: 8 oz (226 grams) Carrier Frequency: 4000 Hz, fixed Interference Frequency: 4001-4150 Hz, adjustable Difference Frequency: 1-150 beats per second, adjustable Bipolar Stimulation: Channel 1 Output Current: 0-66 milliamps peak to peak with 500 ohm load Output Voltage: 0-33 Volts peak to peak with 500 ohm load Waveform: Pulsed Sine Wave Pulse Width: 125 microseconds for each phase Max. Charge per Cycle: 12.5 microcoulombs Power Supply: 4 AA (L00083) batteries or Medical Grade Wall Adaptor Low Battery Indicator: Indicates when batteries are low Four Frequency Shifts: Continuous, 1-10 Hz over 6 seconds and 80-150 Hz over 8 seconds and 1-150 Hz over 10 seconds. Tolerance: +/-1% Output parameters are across a 500 ohm resistance
