Offering two times more power, our most versatile TENS unit is still easy to personalize and customize. When you have those hard to reach, deep pains that just keep coming back, choose MAX Power Relief. It is perfect for multiple adult family members, who may experience pain in the lower back or recurring knee and shoulder pain. This highly customizable TENS unit has modes to reach most of your pains. Take it to work, use it at home or while traveling.