Most stuff nowadays only need the adaptor and not an actual convertor. We keep a set of multi adaptors in out luggage as they come in handy all over, especially on cruise ships. They essentially double your available outlets and cruise ship cabins are known for their skimpy number of outlets. BUT there are a few small appliances and hair styling dodads that might not be dual voltage. My curling iron is but my hair dryer "Bessie" is old (32 years old actually, back when they made stuff that would last) and ugly as homemade sin and is not dual voltage... but she purrs like a kitten and works better than any hair dryer on the market. But she does stay home. If she lasts until I die, I'm putting her in my will!!