Just got back from Japan and the answer would be no, the BB Pearl doesn't work even in the Narita airport. Either in the arrival and departure areas of the airport.
Originally Posted by NJBlackBerry
It may work in major airports like Narita, but Japan has it's own phone networks, which are not compatible with the 8100/Pearl.
Look on the charger itself. It will tell you what voltages it can handle - it is a converter.