In South Korea, the standard electrical outlet has two round holes and provides 220v (60 Hertz). If you are using a device that is not made for this higher voltage, do not plug it in to a Korean wall socket without employing the mediation of a multi-voltage travel adaptor. In the event that you do not have an adaptor, the hotel reception will usually provide one free of charge (or with a small deposit to cover if the adaptor is lost). Should you wish to purchase an adaptor in Korea, these are sold at the airport, in retail stores and major duty-free shops; they can also be found in convenience stores and are even sold in stationery stores. Because the electrical frequency in South Korea is 60Hz, it is not advisable to use the appliances that are made to function at a different frequency, though if the voltage does not differ, at your own discretion you may try to use the appliance for a very short time. Take extra precaution with moving, rotating and time-related appliances, such as clocks, shavers, electrics fan heaters. Be sure to check the label on the appliance. Some devices never require a converter, as they are universal input and made to function in any country. The label on such devices will state, 'INPUT; 100-240V, 50/60 Hz', including chargers of tablets/laptops, photo cameras, cell phones, toothbrushes, etc. South Korea (Republic of Korea/ ROK) electrical sockets (outlets) are identical to one of the two European standard electrical socket types: the "Type C" Europlug and the "Type E" and "Type F" Schuko. If your appliance's plug does not match the two round hole shape of these sockets, you will need a travel plug adaptor to connect your device.