The Master Carbon SEAL watch by Luminox has a 45 mm case and sapphire crystal with anti-reflective coating. The case is made of Carbonox+, a carbon compound material that is six times lighter than steel, hypoallergenic, weatherproof, 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 Master Carbon SEAL watch displays the day and date on the dial. The watch has a black dial, a red rubber strap, and an open aperture case back.