Welcome to Further Details, a recurring column where we investigate what purpose an oft-overlooked product element actually serves. This week: the helium escape valve (HEV).

Like a screen door on a submarine, you wouldn’t think a hole in the side of your dive watch would be a good idea. So what’s it doing on your Rolex Sea-Dweller? Or Omega Seamaster? Or any number of other serious dive watches out there? That hole’s critical but very specific purpose originates in one of the most extreme and dangerous professions in the world.
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Read full post here:
https://gearpatrol.com/2020/05/23/further-details-dive-watch-helium-escape-valve/