The Zenith Defy Skyline Skeleton 03.9300.3620/79.I001 is a 41mm stainless steel watch featuring a blue openworked dial that showcases the El Primero 3620 SK high-frequency automatic movement. The watch includes a 1/10th of a second subdial at 6 o'clock, rhodium-plated hands and hour markers coated with SuperLuminova SLN C1, and a transparent sapphire crystal case back. It comes with an interchangeable stainless steel bracelet and an additional blue rubber strap. Reference number: 03.9300.3620/79.I001.