The Professional series of watches represents the hardest use watches in the Breitling line, with Quartz tool watches and Automatic workhorses that can truly be called hard use wrist intruments like this A7836323.B911. Originally the Aeromarine line of watches shared the Professional brand, however they now are charaterized by their own line as in this A7836323-B911. In 2007, the Breitling Airwolf was introduced and replaced the very popular B-1. The A7836323 B911 Airwolf features a beautiful sunburst dial with a bigger case and the newer Profesional II bracelet. The movement remains the same as the B-1.