tens massager 2 way - 4 pads relax from shoulders fatigue improve ... massager, tens massager,tens machine.1. Output of 2 channels-A & B can be used to treat various ... parts of the body simultaneously. 2. You can choose any of the 5treatment modes(Tapping ... , Modulation, Kneading, Program 1& Program 2) 3. The wave form and frequency will fluctuate automatically ...