The Omega Dark Side of the Moon Speedmaster was designed to pay homage to the Apollo 8 astronauts, who were the first people to see the dark side of the moon. The case was created from a single block of black zirconium oxide ceramic, a highly scratch-resistant material. Most watches with ceramic also use PVD or DLC coating to give the parts that get most wear (crown, pushers, buckle) the same black look. However, the present model uses ceramic for all of the features on the watch. Another unusual feature is that the dial is also made of ceramic.