There are hundreds of travel adapters you can easily buy to help you use your electronics (laptops, cellphones, etc) on various continents, and choosing the right one can be a tiring task which ultimately boils down to price and size.
If you find yourself still switching different adapter heads and plugs, its probably time to upgrade to an all-in-one travel adapter.
The pocket-sized, lightweight Kensington 33117 Travel Plug Adapter (weighs about half a pound) is designed to work in over 150 countries. All its power plugs are built into a single unit and slide out easily to match the country power outlet you need.
Even though there is a built-in fuse to ensure you don’t get jolted with uninvited electricity, it is important to note that this adapter is not a converter and does not step up or down based on the country’s electrical voltage so always check your electronic device’s requirements.
Voltage ranges supported are from 110-volts to 220-volts, and Mac 275-watts to Mac 550-watts.