Six hundred and fifty made. Atomic breath on the dial.

Strip the name off and the SBGA405 is a Grand Seiko Sport diver in the brand’s lightest, hardest titanium, on the 9R15, the higher-grade version of the Spring Drive movement. Spring Drive is Grand Seiko’s own invention: a mainspring drives the watch, a quartz reference regulates it, and the seconds hand glides instead of ticking. The 9R15 is rated to about ten seconds a month.

The Godzilla part is the burgundy sunburst dial, meant to read as the monster’s heat ray, the red-lined strap cut from shark skin, and the caseback relief. Toho and Grand Seiko are both Japanese institutions, and the collaboration was taken seriously on both sides.

This unit is listed new by an independent dealer through Amazon, with Amazon’s return window on top of whatever warranty the dealer states on the listing; read that line, because Grand Seiko’s own warranty runs from the original sale. Grand Seiko limited editions have generally held their value well, and the Godzilla is one of the more sought-after, but that is a pattern, not a promise, and nothing here is investment advice.

If you want a Spring Drive Grand Seiko without the collaboration and at a lower price, the Snowflake SBGA211 is the one everyone starts with, and dealers list it on Amazon too.