BLS🌐New product - Breitling mechanical chronograph series, the design inspiration comes from the Italian Air Force "Tricolor Arrow", it is the favorite chronograph of explorers. The ingenious work uses the original embryo factory as always. 1- Exclusive B01 automatic winding mechanical movement, 2- Stainless steel case with screw-in case back, 3- Ratchet unidirectional bezel, screw-in, double-seal crown, 4- Use curved sapphire crystal glass, double-sided anti-glare mirror. Worth having