The white dial versions will be a limited edition of 1,982 pieces and the black dial versions will be a Nano Universe exclusive of 300 pieces. In both cases, they're individually numbered on the steel casebacks. You can snag each for ¥20,000 (less than $180 at time of publishing), however the snag is they'll only be available in Japan.

The series goes on sale March 10, and you can take a look at the presentation online from Seiko, right here.