Stainless steel 40.5mm Seiko Prospex limited edition dive watch. This watch features an automatic movement with manual winding capacity, Lumibrite on hands, indexes and bezel, three-fold clasp with secure lock, push button release with extender, unidirectional rotating bezel, screw down crown, and is water resistant up to 660 feet. There is a serial numer engraved on the case back. Limited edition out of 5500 pieces. 55th Anniversary Seiko Diver's Watch.