please look the description carefully in case to cause some misunderstanding the voltage of the product is 220v, if you need 110v, we could give you a Voltage converter TSB-200 Decolorization Shaking Table lab decoloing shaker Power supply :220v Power: 40w Frequency : reciprocating motion 40-240 rpm Speed control: digital Amplitude:30mm Overall dimension :370*335*270mm