Pulse frequency ranges from 50-250 microseconds, pulse rate from 2-150 Hz, and pule amplitude from 0-80 mA. All of these adjustments can be made with the convenient and simple dials and switches on the front of the device, making customization quick and easy. Patients can further customize their TENS experience with adjustable pulse amplitude, frequency, and width. These options allow users to customize their therapy experience to best suit their individual needs or their medically recommended/suggested therapy regime. The TENS 2-Channel has three different wave delivery modes: standard, modulate, and burst, and also has three different wave forms: asymmetrical, bi-phase, and square pulse. The maximum full strength reaches 80 mA and the dual channel system allows for independent adjustment for each lead wire. The Transcutaneous Electrical Nerve Stimulation (TENS) 2-Channel is an analog unit that uses a microprocessor for exact dial performance it is as accurate as a digital unit while remaining simple and easy to operate.