Detailed Product Description Power AC 220V 60Hz Power consumption 70W Grade 1st medical equipment Maximum output voltage 90Vp_p Maximum output current 50mA Fixed frequency 2500,4000,5000Hz Flow frequency 2501!2700, 4001~4200, 5001~5200Hz Interferential frequency 1~200Hz Suction level 100,150,200mmHg Dimension 420*415*1100 Weight 45kgs