Amrex IF 250
This unit is microprocessor controlled and features solid state circutry, Quad-Polar, Bi-Polar and Russian Stim. Frequency, Time and Milliamp digital displays. It has time adjustment from 1 to 99 minutes, push button controls, patient treatment stop switch, intensity reset circuit, tilt-up bar, two year warranty parts and labor. This is one of the best units available for the money.