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The link Bulgari Octo Finissimo Satin-Polished Steel watch: case, 40mm x 5.24mm, sapphire link front and back; 100m water resistance. link Movement, Bulgari caliber BVL 138, ultra-thin automatic with platinum micro-rotor, 36.60mm x 2.23mm; 60-hour power reserve running at 21,600 vph; currently the thinnest time-only self-winding movement in production. Price as shown, $11,800; availability, July 2020. For more on watchmaking at Bulgari visit Bulgari . Photos, Tiffany Wade.

A link peek under the dial reveals the even greater mechanical complexity behind the complex display link of information on the dial. Above we can see the perpetual calendar plate. You'll immediately notice that the various gears are organized into four distinct groups which correspond to the four subdials. For instance link the gears on the lower right are the switching mechanism for the months and for the leap year indication.