Japan - power plug and socket

In Japan , electrical sockets and plugs are type A or B.
Type A has two flat parallel pins and type B has two flat parallel pins and a grounding pin.

In country Japan is voltage 100 V and the voltage frequency is 50 Hz, 60 Hz. If the voltage in your country is between 100V - 127V (as is in the US, Canada and most South American countries) you can use your equipment. If your devices are only made for 220V - 250V (as is in the Europe, Australia and most of Asia) you cannot use them and you will need a voltage converter or a voltage converter with a type A or B adapter. If the voltage frequency in your country is different from Japan (100 V), some devices may not work properly.

Check the markings on the device before traveling. Each electrical device has a label (often on the charger) stating at which volt range and frequency it works - example “INPUT: 100-240V, 50/60 Hz”. If this range is also in the target country, you do not need a voltage converter, just check the type of socket / plug. More information about the voltage converter can be found here. Device power label

Many modern hotels are equipped with several types of electrical outlets. If you already have a selected hotel where you will be staying, call there and ask about the types of electrical outlets. If you have not choosed a hotel yet, you can check them out on (Accommodation - booking.com)