The Navy SEAL dive watch by Luminox has a 43 mm case and mineral crystal. This watch was first introduced in 1994 and developed specifically for the SEALs. 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 comes with a black dial and black integrated rubber strap.