Marinemaster M-40 Colorway:Amber Orange we have perfected the design

we have perfected the design and function and created the most legible watch

delivering unparalleled timekeeping accuracy even in the harshest conditions

With a 70-hour power reserve and a Variable-Inertia Regulation system

Made to fit all Fortis B-42 watches such as the B-42 Official Cosmonauts

We have been building the Marinemaster since 1954

Marinemaster M-40 Colorway:Amber Orange we have perfected the designWe have been building the Marinemaster since 1954, making it one of the oldest diver's watches. This watch combines state of the art technology with a robust design to stand by your side in any situation.