Read the fine print on this -- this product does not convert or reduce electrical voltage -- essentially what this does is provide a physical way for (insert your country's) plug to fit into (insert destination country's) plug. So if the country you are visiting runs on, say, 220, make sure that the device you want to plug into it can handle the 220 volts so that it doesn't blow up -- and that information will (typically) be handily located on the device itself (i.e., look at the small print on your phone charger, and see if it says 100-240V 50-60Hz)