For true watchmakers, the greatest challenge of all is to create watches for those who love adventure sports. The Seiko Prospex collection features timepieces for adventure seekers on land, in the sea or in the sky. This Sumo Hulk men's model houses a bold green dial within a 45mm stainless steel case with a uni-directional rotating bezel and sapphire crystal. Three hands, powered by automatic Calibre 6R35 movement, and shaped markers feature Lumibrite accents for visibility in low light conditions. A date aperature sits at 3-o-clock for added efficiency. Finished with a stainless steel bracelet with a three-fold clasp with secure lock, push button release and extender. This watch is water resistant up to 200 metres.