I bought it for international travel to Japan, but the US-Japan plug is three prong instead of two, which makes it a lot less versatile. I will have to plug it into a two prong adapter, which adds more luggage and hassle.
Also, you shipped me a whole case of them instead of one item. Since the box weighed about 25 lbs, it was an inconvenience to return them to UPS, since I had to go to a facility where I could find parking.