Bulova Oceanographer 98B320 Automatic Men's Watch This re-release of the ‘70’s Oceanographer Devil Diver (aptly named for its 666 feet of water resistance) is powered by a self-winding mechanical movement; fitted with a stainless steel screw-back case and a screw-down crown. The black/red unidirectional bezel is a symbol that signifies its diver status; the bright lume confirms it. The sapphire crystal has an anti-reflective coating, which doesn’t only stop Sunlight from blinding your eyes but also aids greatly stopping reflections when down under water.