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Then, there is the movement, which is absolutely a step up. The 2892-A2 is an excellent 4Hz automatic movement from ETA and link in this scenario, it's also link COSC certified, so those who prefer link a bit less wabi-sabi in their timekeeping will be able to enjoy chronometer-spec performance.

Where the real interest and ingenuity can be found link is link in how those materials are used. The caliber 849 uses an extensively modified escapement and balance, as well as a "hanging" mainspring barrel (supported only on link one side) to reduce the height of the movement to its minimum, and the version of the 849 used by Vacheron as the caliber 1003 reduces the height even further, to just 1.64mm.

Aquastar was not a brand I was too link familiar with before starting at link HODINKEE. Sure I saw a few for sale from dealers I follow and knew there was some connection with Jacques Cousteau and his little red knit cap link but I never had a vintage Aquastar in my hands. When I amended this terrible mistake in my vintage watch scholarship everything changed.