Tens Unit Dual Channel 3 Mode w/Timer

System includes device lead wires four self-adhesive reusable electrodes 9V battery hard plastic carrying case and instruction manual.
3 Modes: Standard Modulate and Burst
Dual Channel
30 and 60 minutes or continuous timer
Adjustable Pulse Width: 50-250 Microseconds
Pulse Rate: 2-150 Hz
Pulse Amplitude: 0-80 mA each channel
Waveform: Asymmetrical biphasic square pulse
One year warranty
FDA approved.