Certina DS-1 Big Date Powermatic 80Certina DS 1 Big Date Powermatic 80 The Certina DS 1 Big Date Powermatic 80 is a sophisticated and elegant timepiece that combines timeless design with modern Swiss technology. Featuring a 41 mm stainless steel case, this watch offers both durability and refined aesthetics. The blue sunray dial is complemented by silver tone hands and indices with Super LumiNova, ensuring excellent readability in all lighting conditions. The prominent Big Date display