I'm leaving for Japan on Friday and I borrowed a musicPower iPod charger from my cousins. I was told by a sales associate at a RadioShack that Japan has the same outlet plug as the US and that the voltages are close (Japan is 100 the US is 110-120) and there aren't any converters for voltages that are so close and I'll be fine plugging my appliances into the outlets without an adapter/converter. Then I went to a website that said there are converters out there for Japanese outlets but some appliances work fine on certain ranges of voltages. Is that true? I don't want to blow myself up. I really need to know as quickly as humanly possible. I leave Friday!!! Thank you in advance.