Certina DS Action Day-Date Powermatic 80Certina DS Action Day Date Powermatic 80 The Certina DS Action Day Date Powermatic 80 is a robust and sophisticated timepiece, ideal for any occasion. Featuring a 41 mm stainless steel case and bracelet paired with a bold black dial, it delivers a sleek and modern aesthetic. The day date display adds a practical touch, while the Powermatic 80 automatic movement provides an impressive 80 hour power reserve for reliable performance. Water resistant up