Multiple Functions 300 Watts International Travel Voltage Converter For 220V To 110V Or 110V To 220V AC 55 / 60HZ, Ideal For Laptops, Camera, Iphones, and Other Watts Below 200W Devices-White There is a switch on the product, you can choose input 220 / 240V, output 110 / 120V by switch to AC-230V, or input 110 / 120V, output 220 / 240V by switch to AC-117V. Please adjust the switch before you use it, or it will be forbidden to use. 300 watt dual voltage converter for worldwide use, you can use it with watts below 200W device A perfect collocation with a adapter for the outlet on your destination. Do Not Connect Multiple Items At One Time Multiple function with high quality, essential travel home production DO NOT USE WITH game consoles, tools, kitchen appliances, hair dryers, flat irons or other heat producing appliances