Voltage and Frequency

China: 220V at 50Hz. US/Japan: 110V/60Hz.

Plug Types

Type A (two flat pins) and Type I (three flat pins).

How to Check

"100-240V, 50/60Hz" = universal voltage, just need a plug adapter. "110V" only = need a transformer.

Choosing a Transformer

Transformer wattage should be 1.5 times the appliance's wattage.

Buying Appliances in China

Buy small appliances locally.

USB Devices

Phones, tablets, laptops are usually universal voltage β€” just need a plug adapter.