Quattro EMS 4-Channel Electrotherapy Stimulator Machine

Four channel, three mode (constant, alternation, synchronous) clinical EMS unit. Features Asymmetric Bi-Phasic square pulse wave with adjustable pulse amplitude (0-100mA) and rate (1-160MHz) with constant width (300μs). Adjustable ramp, and on/off cycle time. Comes with 9 volt adapter.