Greetings! Thanks to Amazon, I recently acquired a pair of rare and expensive Japanese architectural models --- Sega's 'Tokyo Tower 2007' is in 1/500 scale and comes nearly fully assembled. The model also features LED lighting. Bandai's 'Tokyo Sky Tree' comes in 1/700 scale, and this one must be assembled by the modeler. It also features LED lighting, which leads me to my question --- While the Bandai 'Sky Tree' does have a battery option, both models also come with adapters and plugs for household current - Japanese household current. Those in the know will tell you that Japan runs on less voltage than America does - some 100 to 11oV vs. 120V. So...would some sort of voltage converter be necessary for these models if I wanted to exhibit or display them fully lit for an extended period of time, like several hours? I certainly wouldn't want to risk burning out the LED's prematurely. And if such a converter is indeed necessary, where might be the best place for me to obtain one? Home Depot, or some such place? Thanks for any help!