South Korea Electricity and Power Outlets
The outlets in South Korea are Type C or Type F, with twin rounded prongs. You’ll recognize these if you’ve traveled in Europe.
While many hotels these days have a more universal outlet setup, it’s best to assume you need an adapter to charge your devices in Korea. You can find simple ones online for under $5. To make things easy, buy a universal adapter that can be used in almost any country worldwide, such as this one.
The voltage in South Korea is 220v, compared to the USA’s 120v. Your common phone charger should work fine, but if you’re trying to power other devices, you may want a voltage converter. Read this article for more details.