The Rolex Sea-Dweller Vs. Doxa's Sub 300T: A Battle For The Burly Wristed
Henry compares two historic competitors, the Rolex Sea-Dweller and Doxa Sub 300T, to see if they still compete at a technical level.
In the 1960s, the golden age of scuba diving and sports-watch design, Doxa and Rolex co-developed a specialized technology to allow their diving watches to endure the deep.
A major issue with dive watches at the time was helium particles getting trapped inside and forcing the crystals to pop off during ascent.
To solve this, the companies developed the helium escape valve (HEV), which allows helium particles to escape through a valve system in the watch case.
A helium escape valve
Author's summary: Comparing Rolex Sea-Dweller and Doxa Sub 300T.
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