Use any 110V appliance in foreign countries. If you have any device that works with 110V now you can use it in foreign countries just adding this great adapter. This adapter will transform the 220V obtained from any wall plug in foreign countries to 110V, so you can use your appliances from the US that were made to work with 110V. Converts 220V foreign electricity to 110V US electricity. Allows 110V US made portable appliances to be used in 220V foreign outlets. Measures: 0.625" L x 1.5" D x 2.5" H Sealed in original package.