Navitimer B01 Chronograph 41Designed for aviators among the ranks Embraces classic design with modern refinements Silver toned dial with chronograph counters and baton indexes 41mm stainless steel case and bracelet Powered by the Breitling 01 caliber movement AN ICONIC PILOTS CHRONOGRAPHFirst introduced in 1952, the navigation timer, or the Navitimer, was designed to allow pilots to perform all necessary flight calculations in the sky. Two years later, it was named the official