This 2021 design is inspired by Japans first diving watch, created by Seiko back in 1965. This 2021 version comes with calibre 6R35 and its long-lasting 70-hour power reserve, accompanied by Seikos first ever original fabric strap for divers watchestheSEICHU,crafted in Japan, designed for flexibility and durability. Prospex is a combination of the wordsProfessionalandSpecifications.Seiko Prospex timepieces are designed to be practical, reliable and durable; to meet the high standards required in extreme environments for sports lovers and adventure seekers alike. Since launching Japans first divers watch in 1965, Seikos innovative watchmaking has changed global dive watch standards.