This striking Seiko Prospex is powered by a Seiko 4R35, 23-jewel self-winding automatic movement with hand winding and a stop-second mechanism. A compass marked inner-rotating bezel is provided for field use, hiking, camping, etc. The hands and hour markers are luminous filled with Seiko's famous LumiBrite for excellent time viewing in the dark. The radiant blue dial and combined with a matching blue canvas strap has a great presence on your wrist. Drilled lugs allow for quicker and easier strap changes. The watch features a 42mm diameter gun metal ion plated stainless steel case, a Hardlex mineral crystal, a date window, and it is water resistant to 100 meters.