I'm sure this has come up before on your blog but I wasn't able to find it: What are the electric plugs like in Korea? I cannot seems to find a solid answer on this one. I heard they were European plugs, which would be great because I have a ton of adapters for European plugs. If they're different I need to buy a few adapters before I go!
The standard voltage in Korea is 220 volts (60 Hz) . The outlet has two round holes and looks similar to those used in many European countries.
Europe, however, uses 230 volts (50 Hz). Because the voltage and frequency is so close, some people are inclined to use adapters, but don't. You'll end up ruining whatever you try to plug into it. The same goes for converters. While they might work well for low-function clock radios and other low-stress appliances, converters won't tolerate desktop computers or even hair-dyers. You'll need to pick up a transformer. They'll run you more, but you'll be protecting yourself from damaged items as well as the risk of fire. Some people might disagree with me and say you'll be fine, but it's always better to be safe.