OMEGA on Twitter: "#SeamasterDiver Small but mighty. There's a helium escape valve on every Diver 300M. https://t.co/7OdZEFncJ6 https://t.co/yZmj3at7Em" / Twitter
What is a Helium Release Valve, and why do you need one?! - YouTube
Rolex] Helium escape valve on a watch on a wrist in the woods. : r/Watches
Helium Release Valve | Horobox
The Helium Escape Valve - Everything You Need to Know | Bob's Watches