Interferential therapy is based on the effect of low-frequency stimulation as in the biological frequency range. The interferential current is the result of two interacting medium frequency currents produced by Classic IF. The treatment can proceed with four or two electrodes. Features: *Display will show all chosen function and indicating the condition *Programmable units with total capabilities *With timer and memory *Time use memory *Timer programmed with count down display *Auto shut down whilst remembering last setting *Digital display all functions *Easy to use controls