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This continuous use transformer is capable of both up and down voltage conversions for Japan and USA electricity to enable use of Japanese products in USA and USA products in Japan
200 Watts is the maximum capacity of this transformer including the power surge
It converts 110/120 volt USA power to 100 volt Japan power AND 100 volt to 110/120 volts (means it will convert the American power to Japanese power and also convert Japanese power to American)
Power ON/OFF Switch. Fuse protection for safety
Remember to leave at least a 100% margin for power surges/spike when buying a transformer. For power tools, laser printers and heating appliances like Rice cookers, coffee makers, toasters, halogen or fluorescent bulbs you must leave a power spike margin of 4 times

Product Description

This transformer is capable of both up/down voltage conversions for Japan/USA. Can be used in 100 and 120-volt countries. Will convert from 120 volt to 100 volts AND from 100 volt to 120 volts. Input: 100/120V Output: 100/120V. Rated Load: 200W max including power surge. Heavy duty for continuous use. Power ON/OFF Switch. Fuse Protected. This transformer is capable of both up/down voltage conversions for Japan/USA. Can be used in 100 and 120 volt countries Will convert from 120 volt to 100 volt AND from 100 volt to 120-volt Input: 100/120V Output: 100/120V Rated Load: 200W max including power surge Heavy duty for continuous use Power ON/OFF Switch Fuse Protected.

From the Manufacturer

This transformer is capable of both up/down voltage conversions for Japan/USA. Can be used in 100 and 120 volt countries. Will convert from 120 volt to 100 volt AND from 100 volt to 120 volts. Input: 100/120V Output: 100/120V. Rated Load: 200W max including power surge. Heavy duty for continuous use. Power ON/OFF Switch. Fuse Protected. This transformer is capable of both up/down voltage conversions for Japan/USA. Can be used in 100 and 120 volt countries Will convert from 120 volt to 100 volt AND from 100 volt to 120 volts Input: 100/120V Output: 100/120V Rated Load: 200W max including power surge Heavy duty for continuous use Power ON/OFF Switch Fuse Protected.