100w 110v/120v To 220v/240v Step-up&down Voltage Converter Transformer Travel White new. Ideal for travelling to anywhere.Dual Channel Voltage Converter from 110/120V to 220/240V,also can change from 220/240V to 110/120V.AC117V---AC230V switchThe maximum load power is 100W.Make which voltage you need used this adapter.Color: WhiteYou need to check the switchs' place at the bottom of the adapter.That is:Switch to AC117V,input voltage must be AC110/120V,voltage converter (output) AC220/240V;Switch to AC230V,input voltage must be AC220/240V,And change the voltage into (output) AC110/120V.Attention:it will be broken with wrong operation,and we will not responsible for the wrong operation.if you are not use it pls plug it outPackage included:1x Power ConverterNote:Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/-1-3cm.