The Navy SEAL Dive blackout watch by Luminox has a 45 mm case and mineral crystal. The case is made of Carbonox a carbon compound material that is six times lighter than steel as well as shock and scratch resistant. The Luminox watch comes with their signature light technology which provides self-powered illumination lasting 25 years with no external light source needed. The Navy SEAL dive watch has a black dial with black numerals and a black rubber strap.