This is the plug adapter from U.S. type A to Europe/Asia type C wall outlet. This adapter will allow your North American devices such as cellphone, camera, laptop chargers to plug into European/Asian style electric outlet. Takes North American plug to fit into European/Asian style electric outlet.
Output: North American 2 pin flat un-grounded receptacle (female).
4MM diameter round prongs.
Please note that this is just the plug adapter for plug-in configuration purpose only. It does not change electrical voltage current between 110 and 220 volt.