This micro 400 tens works in two different ways: first, high-frequency, continuous and mild electro-activity can block pain signals traveling to the brain. Second, tens is thought to stimulate body's own natural pain control mechanism. Low-frequency or short bursts of mild and electrical activity may cause body to release its pain dealer, called beta-endorphins. No matter what pain theory is adopted, tens has been proven useful in pain management.
positive and negative pulses interchangeable
four modulated frequencies
square or slope waveforms selectable
miniamps or microamps current selectable
popular compact size
easy operation of switches and controllers
belt clip, direction adjustment
low rate and high rate features
low batter indicator.