Extremely flexible, powerful, comfortable and user friendly. Functions like a TENS in constant mode to achieve pain relief. The patient or therapist can easily toggle from pain relief settings to a muscle building program with the push of one button. Adjustable Constant, Cycled and Reciprocal open programs (Holds custom settings.) There are 8 user friendly pre-set therapy settings to accommodate a wide population range from pediatric applications to professional athletes. The device holds up to three custom programs and it is easy for the patient to toggle between them. The custom programs remain set into the device until they are changed or reset. The patient Compliance meter starts recording how many hours the device has been used from the first time it is used until the device is reset by the therapist. The adjustable pulse width setting enables patients of all tolerance levels to achieve success in their rehab program.