C3H5N3O9

Produced in 2013-2014, the Urwerk C3H5N3O9 takes its name from the chemical formula for nitroglycerin and houses the ZR012, a manual-wind movement with a 39-hour power reserve. Its imposing 55mm tonneau case is rendered in zirconium, and water resistance is a modest 30m befitting its status as a…

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