Galvanic Therapy Unit, Portable/Battery, Ac Adapter, Complete
Power source: Operated by 9V battery or AC adapter.
Waveform: Positive or negative.
Output mode: Synchronous or alternation.
Alternation mode-LED alternation between green and red color.
Includes stimulator, lead wires, 4 self stick disposable electrodes, 9V battery, AC adapter, plastic carrying case, and instructions.