The Seiko Prospex SPB181J1 is a professional-grade diver's watch, celebrated as a PADI Special Edition. Known affectionately by fans as the 'Sumo', this timepiece features a robust 45mm stainless steel case and a distinctive 'Pepsi' blue and red unidirectional bezel. Powered by the reliable 6R35 automatic movement, it offers an impressive 70-hour power reserve. With a scratch-resistant sapphire crystal and high-visibility LumiBrite markers, it is designed for both underwater performance and everyday durability. The secure stainless steel bracelet ensures a comfortable fit for any adventure.