Power : AC 220V Frequency : 60Hz Power consumption : 40W(H-301), 70W(H-311) Fixed Frequency : 4000 Hz Output Voltage : 120Vp-p Treatment Frequency : 0.5 ~ 120 Hz Vacuum Power : 0 ~ 250 mmHg Suction Mode : 15, 20, 30 times / minute, Continuous Weight : 30kg(H-301), 35Kg(H-311) Dimension : 450(W) X 650(L) X 840(H)