Meet the Prospex "Marine Green" GMT watch. This modern re-interpretation of the 1968 Diver's watch is inspired by Japan’s first hi-beat one-piece Diver’s watch created by Seiko in 1968. This modern watch is powered by the new in-house Calibre 6R54 and is the first of Seiko’s diving watches with mechanical GMT functionality. Built for wearability: the bracelet fits comfortably due to its low centre of gravity and short-pitch – and durability: with a three-day power reserve and high-quality scratch resistant Japanese ceramic Diving scale, its water resistance is up to 200m.