A collection inspired by the dark side of the moon. The last letter denotes the generation of the watch. Letter B is generation 2 the newest models with the two ports on the rear of the watch.The case is completely filled with a special oil that emphasizes the dial, made in brownmetal with Soleil finishing, creating an optical effect of a more intense color and higher legibility. Innovative locking system (Locking ring system) with quick battery replacement.