Swiss Made Vacuum Water-Resistance Tester
Upon final assembly, we run your watch thru the Swiss made Elma vacuum water-resistance tester which checks the gaskets.
Once the watch passes this final test, it denotes that your watch is depth rated and safe for diving. Only applies to the Classic and Tactical models; the Aviator watch uses a hand-wind movement, [types of Swiss movements] and as such doesn’t have a screwed-in watch crown
* please note that water-resistant watches should not be used in steam generating environments like a shower/hot-tub (read about why)