Derived from the original Seiko 'Alpinist,' beloved by Japanese mountain men in 1959, this watch improves on the Alpinist's design with a focus on legibility. It's practical, with a compass and a super-hard coating for shine and scratch resistance and curved sapphire glass. The in-house 6R54 Calibre is the first Prospex GMT movement with a three-day power reserve for dual time zone tracking. This versatile GMT watch is built for adventure, featuring 200m water resistance and a secure screw-down crown for enhanced durability. The see-through case back offers a glimpse of the intricate automatic movement inside, while Lumibrite hands and indexes ensure clear visibility in low light. With its dual time zone functionality, it's perfect for travellers and explorers alike. • Powered by the mechanical movement with 24 jewels and a power reserve of up to 72 hours. • Presented on a black leather strap with push button deployment clasp. • Scratch resistant sapphire crystal glass. • 39.5mm case width. • 200 metre water resistance.