Tens 4 channel auto mode with lcd- tense 4 channel auto mode in latest advanced technology solid state circuitry and dual channel facility. It has burst 1, continuous , burst 2, p. W. M. , sweep and combi, alteration modes. The output polarity changes automatically treatment time is controlled by micro controlled timer. The display medium is lcd and the technical specification are: technical specification:frequency : :2hz to 125 h2mode : 6 mode pulse - width : 50-300 u sec operational voltage : 220 v - 50 hz weight : 1½ kg