MWC 1940s/1950s "Dirty Dozen" Pattern General Service Watch with a Mechanical Quartz Hybrid Movement G10EL the helium valve is essential

the helium valve is essential for deep dive watches like our 500M range to ensure the watch remains fit for purpose

Advantages – Even

Helium Escape Valve: Yes – for saturation diving

Hacking Movement: Ensures accurate time synchronization

MWC 1940s/1950s "Dirty Dozen" Pattern General Service Watch with a Mechanical Quartz Hybrid Movement G10EL the helium valve is essentialW10 445 MQZ Classic 1940s 1950s Military Style Watch This MWC model is inspired by classic British military watches from the 1940s and 1950s. With its clean dial, subsidiary seconds display, and balanced proportions, it reflects the distinctive character of early field watches while incorporating modern materials for reliable everyday use. Vintage Character with Modern Practicality The design remains faithful to historical models, featuring a domed