Seiko prospex watch diver spb051 these new timepieces also echo the design of the 1965 original but are thoroughly up to date in their functions and meet seikos stringent standards for divers watches the hands are wider and carry long lasting lumibrite so as to be highly legible even in dark water the water resistance has been increased to 200 meters and the crystal is sapphire for greater strength and durability and has an anti reflection coating the watch sits perfectly on the wrist and t