Hollywog® WiTouch is the first wireless remote controlled pain relief device utilizing TENS technology to specifically target back pain. If you have back pain and are looking for a drug free alternative to help you make it through the day, then the WiTouch may be right for you! The function of TENS is really pretty straightforward. It works by suppressing the transmission of nerve pain (called Gate Control Theory), and reducing the sensitivity of pain (called Opiate Release Theory). Its thin and flexible design allows the WiTouch to contour perfectly over the surface of the back for a perfect fit on virtually anyone. You can wear it under your clothes for treatment on your own schedule without any wires! The WiTouch incorporates advanced electronics into its minimal design, maximizing energy efficiency and providing over 150 30-minute treatment sessions per battery! WiTouch is safe, drug-free, easy to use, discreet, comfortable to wear, and most importantly allows you to control your pain to maintain an active lifestyle. Specifications: • Channels: Single channel • Waveform: Asymmetric biphasic square pulse. • Pulse Amplitude: 0 ~110 mA = 0 ~ 55 volts, adjustable (at 500 ohm load) • Pulse Frequency: (Hz) 5-120 • Pulse Width: (μs) 120 - 240 • Timer Control: (mins) 30 • Power Supply: Device: Two (2) AAA batteries (Internally Powered) Remote Control: One (1) CR2032 Lithium battery (Internally Powered) Made in USA