While the adaptors work great for all countries, because of how the adaptors slide unto the charger, you can't use the adaptors for any other electronics (like a camera charger). So...you have to bring multiple adaptors unless all you have is Apple products. I ended up buying a cheap $3 adaptor at the airport that worked for all electronics. The charger already is dual voltage, all you have to do is get it plugged in. I was looking for a great adaptor set with Apple quality, which it is, but the exclusive design makes the $39 price tag ridiculous. Save your money and buy a cheap prong adaptor at the airport when you get off the plane.
This so called world adapter does not serve India or Pakistan ...and good luck finding information for other than the eight listed countries or Europe . This product would be greatly improved by including a matrix of which adapter by the other hundreds of places in the world
The adapter plugs are limited to this unit only, ie cannot be used with any other appliance such as a camera battery charger, shaver etc. I bought the simple Apple USB power adapter (still 35$ expensive) along with a good quality universal travel adapter for 25$ (Heys) and my travel needs were met.
Downside: I was limited to charging one unit at a time but everything worked out fine.
