The PROSPEX Collection, a cult favorite among watch enthusiast from all over the world combines durability with sporty style. The special edition SRPF77 automatic dive watch has a 45mm brushed and polished stainless steel case with gradient blue ocean wave pattern stamped dial with "Manta Ray" theme. The black ceramic rotating uni-directional 120 click elapsed timing bezel is well suited for professional diving with a 200 meter water resistance. Equipped with a magnified double day/date window @3 and luminous hands, markers and appendages makes this wrist watch easily readable in any environment. The screw-down crown is strategically positioned at 4:00 for increased comfort and provides added security against moisture and dirt intrusion. Powered by Seiko's own in-house-made automatic caliber 4R36 movement with a 41 hour power reserve. Fitted with a comfort fit blue textured silicone rubberized strap with tang buckle and stainless steel metal safety keeper to keep your watch secure and in place. Seiko is known for its quality, long lasting durable luxurious timepieces that stands the test of time. The PROSPEX collection is a gold standard for watch fanatics of all capacities. This sporty special edition timepiece is just the latest edition in a Seiko's history of innovations in diving wrist watches.