Dual Channel, 3 Modes The TENS 3000 is a high quality TENS unit that uses the newest technology of a microprocessor, which gives exact dial performance. The TENS 3000 has the ease of operation of an analog unit with the accuracy of a digital unit! The TENS 3000 comes standard with a Safety Amplitude Cap, which is a transparent pivoting cap that closes over the amplitude knobs to help protect the user from power jolts from accidental knob Technical Specifications Channel: Pulse Amplitude: Pulse Rate: Pulse Width: Modulation Mode: Burst Mode: Wave Form: Timer: Voltage: Max. Charge per pulse: Power Supply: Battery Life: Size: Weight: Dual, isolated between channels Adjustable, 0-80 mA peak into 500 ohm load each channel Adjustable, from 2 to 150 Hz Adjustable, from 30 to 260 microseconds Pulse rate is automatically varied in a cyclic pattern over an interval of nominally 10 seconds (in max 1150 Hz). Pulse rate decreases linearly over a period of 4 seconds from the control setting value to a value which is 40% less. The lower pulse rate will continue for 1 second. Then increase linearly over a 4 second period to its original value. The original pulse rate will continue for 1 second. The cycle is then repeated. Bursts occur twice every second. Pulse width (adjustable), frequency=100 Hz Asymetrical Bi-Phasic Square Pulse 15, 30 minutes or Continue 0 to 40 V (Load: 500 ohm) 20 micro-coulombs One 9-volt battery (alkaline, or nickel-cadmium rechargable) Approximately 50 hours at nominal settings 95 (H) x 65 (W) x (23.5 (T) mm 115 grams (battery included)