Portable, dual channel TENS with 0.8" x 1.6" digital display screen. Features 5 stimulation modes, including Strength Duration and Bi-Pulse. Memory feature retains last setting. Includes self-adhesive electrodes (1.5"x1.5") with wires, carrying case, belt clip, 9 volt battery, and instructions. Specifications. 

Warranty: 1 year, unit only 

Wire Jack Size: 4.0mm

Specifications:

Output Channels:          2 independent intensity channels

Frequency:                      2 to 150 Hz

Volts and current:         0 to 40 volts, 0 to 80 mA (milliamps)

Pulse width:                    50 to 300 microseconds adjustable

Pulse shape:                  asymmetric biphasic square wave

Pulse modes:                 constant, burst, MRW, SD, bi-pulse

Power source:               9 volt battery

Size, weight, color:       3.9" x 2.3" x 1", 0.3 lbs, Gray

Timer                              5 to 90 min, adjustable

Specifications500 ohm test lo