I bought this for my portable speakers for my mp3/mobile phone.  The cord that came with the speakers was not long enough to reach under my desk to the wall (only one outlet in the room I am in).  I figured I don't really need 10 feet for that but for other areas of my house where wall outlets are scarce this would come in handy.  Please note there is a female and male end, like any other extension cord.  This is perfect for the price.  I recommend it.