Navitimer B01 Chronograph 46

From the retailer listing

For more than 65 years, the Breitling Navitimer has been one of the world’s most beloved mechanical chronographs. And now, the most modern iteration of the Navitimer family introduces a veritable watchmaking legend to a whole new generation. As a larger-than-life interpretation of that legend, this Navitimer features a generous 46 mm diameter accentuating its presence on the wrist and enhancing the originality of its design, while optimizing the readability of the dial and the circular aviation slide rule. A transparent caseback reveals the chronometer-certified, high-performance self-winding chronograph caliber, Manufacture Breitling Caliber 01.