What time is it? Watches and horology

How does the goth diver work?

It's a homage on the Blancpain bund, which Squale have a hand in making, no way I can afford a Fifty Fathom, and not too keen on the otherwise excellent Helson version, this is pretty bang on;

It was created for the German Navy;

It was back in 1975 when Blancpain made this version of the Fifty Fathoms for the German Bundeswehr. The special frogmen division known as Kampfschwimmer was equipped with rebreathers, meaning they could stay submerged for much longer than before. This had a practical implication for their watch; the rotating dive time bezel no longer needed to be graduated in minutes. Knowing your dive time down to the minute was life-saving with traditional scuba gear. The rebreather technology meant this was no longer relevant. The result? A stark black dive time bezel with no markings other than a triangle at twelve.