This sells online for OVER $70.00 + $7.18 est. tax + Shipping. But, you can have mine for just $40.
Channels: Dual Channel (Isolated between channels)
Waveform: Modified square wave with zero net direct current (DC) component
Pulse Width: 60 to 250 microseconds, adjustable
Pulse Frequency: 2 to 150 Hz, adjustable
Pulse Amplitude: 0 to 80 mA each channel, adjustable (500 ohm load)
3 Adjustable Modes:
Normal Mode (N)
Modulation Mode (M)
Pulse Width is automatically varied in a cyclic pattern over an interval of nominally 4.0 seconds.
Burst Mode (B)
7 Pulses per Burst / 2 Bursts per Second; 100 Hz Internal Frequency of Burst
Maximum Charge: 20 µc per Pulse
Power Source: 9 volt Battery or similar rechargeable cell
Size: 0.9 x 2.5 x 3.7 in. (24 x 64 x 95 mm)
Weight: 0.29 lbs (130 grams) (including battery)
All values have 10% +/- tolerance
Immediate relief of acute or chronic pain
Pain relief for back, foot, shoulder, neck, virtually any acute or chronic pain
Relaxation of muscle spasms
Increasing local blood circulation
Immediate post-surgical stimulation
Maintaining or increasing range of motion
Portable Analog TENS Unit-2000
2 Pair of Lead Wires
4 Self-Stick Adhesive EMSI TENS Electrodes
9 Volt Battery
Carrying Case
Belt Clip