The Zenith DEFY Skyline Chronograph Skeleton, reference 03.9500.3600/79.I001, features a 42mm stainless steel case with an octagonal shape and faceted bezel. The blue openworked dial includes contrasting silver-colored subdials, rhodium-plated hour markers, and hands coated with Super-LumiNova SLN C1. Powered by the El Primero 3600SK automatic movement, it offers a 1/10th of a second chronograph function, with a power reserve of approximately 60 hours. The watch is water-resistant up to 100 meters and comes with both a stainless steel bracelet and a blue patterned rubber strap, easily interchangeable via the strap-changing system. (zenith-watches.com)