The Doxa Sub 300 Carbon Aqua Lung US Divers has a 42.5mm case that is made of forged carbon with a titanium inner structure and caseback. It is water-resistant to 300m, has a screw-down crown, a carbon bezel, a sapphire crystal, and is powered by a COSC-certified ETA 2824. The retail price is $4,790 and you can find more details here.
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