Very cool! A lot of research and expertise in precision manufacturing went into this. I tried to figure out what the significance of pricing it at 777.777 yen might be, but I.just went down a neverending rabbit hole of Shintō and Japanese traditions. Sorry.
5K HBD is a bit steep for me right now 😄, I think I'll hold off and stick to the regular-sized, plastic version for now, but it IS cool.