Instruct: Classify Amazon reviews into positive or negative sentiment
Query: most outlets in Europe are round and recessed, meaning this won't work by itself

Tried using it in Belgium and France, only to discover that most outlets there are recessed about a quarter to half inch, and the recessed area is round. Can't fit a square peg into a round hole, so this item wouldn't stay in any of the outlets!They should warn you BEFORE traveling to also buy a simple converter piece so that you can use this item in recessed outlets. We were fortunate enough to pick one up in Belgium.Once we were able to use it, it worked fine with the curling iron, etc.