The Seiko Prospex SLA023J1 Marine Master Blue. It's finally here!
It is a common belief that any professional diving watch designed for saturation diving should have a helium escape valve. Also, the story goes that a single-piece steel case appeared just during the 70s, to be after that abandoned by all watch manufacturers. Finally, and this is the most bizarre if not old-fashioned, it is widely accepted that a Japanese diving watch is a perfect companion during the toughest diving session, but too professional looking and hard-to-wear as an everyday timepiece...CONTINUE