The Certina DS-1 Skeleton C029.907.11.041.00 is a men's automatic watch featuring a 40mm stainless steel case and a blue skeleton dial. It is powered by the Powermatic 80.631 movement, offering an 80-hour power reserve and equipped with a Nivachron™ balance spring for enhanced resistance to magnetic fields. The watch includes a stainless steel bracelet with a quick-release system and is water-resistant up to 100 meters. Reference number: C029.907.11.041.00.