Manufacturer's Description:
Four Channels, 12 Electrode Pads (8 Active at a time), Channels Isolated Waveform: Biphasic or Mono-Phasic Frequency: 2 - 140 Hertz, Reciprocation: Yes (for supersetting muscle groups), Pulse Width: 300 microseconds, Ramp Time: 3 Seconds, Contraction Time: variable 3 to 45 Seconds, Relaxation Time: variable 3 to 45 Seconds, Power Output: 0 - 34.3 microColumbs (100 Volts), Dimensions: 3 1/4"(H) x 8" (W) x 8" (L), Fuse: 250V 4A slow blow