Sleep number mattress and frame, should we bring to Japan?

Hello all,

We are planning to move to Japan and have a sleep number mattress and frame. I have a few questions for anyone who might know:

1. Our frame is king sized, but can be broken down. But we do have 2 twin mattresses, will the size be a problem?
2. Will power be a problem? Can we just use a converter?
3. Has anyone else brought one? Have you had any difficulties with it?
4. I know we can’t get it serviced directly with sleep number if we do have any problems, is there anyone or any companies in Japan that would be able to work on it if need be?

Thanks!