Prospex Special Edition Diver. The Prospex dive line by Seiko has cemented itself as a cult classic for divers and watch aficionados alike. Designed with a stainless steel case and silicone strap, this Special Edition diver features a gradient blue one way rotating bezel and textured blue dial. The day/date calendar is displayed at the 3 o’ clock marker with LumiBrite hands and markers. The 24 jewel automatic movement allows for manual and automatic winding capabilities and beats at a frequency of 21,600 vibrations per hour, with a power reserve of approximately 41 hours, 200M Water Resistant