At its core, the Navitimer B01 Chronograph runs on Breitling's self-winding mechanical caliber, offering a 70-hour power reserve alongside chronograph functions that track 1/4-second intervals, 30-minute totals, and 12-hour elapsed time. The 41mm round stainless steel case houses a screwed-in sapphire crystal caseback and measures 13.6mm thick with a 47.09mm lug-to-lug span. A cambered sapphire crystal, glareproofed on both sides, sits above the blue analog dial, which features index hour markers and luminescent silver-tone hands for clear readability in varied lighting.
The bidirectional rotating slide rule bezel remains faithful to the Navitimer's long-standing aviation identity, while the black alligator leather strap and stainless steel fold clasp give the watch a polished, refined character. Water resistance is rated to 30 meters / 100 feet, and the case back provides a view of the movement through the screwed sapphire crystal.
Reference AB0139241C1P1 is presented in new condition and includes both the original box and original papers. The combination of a functional slide rule bezel, a vivid blue dial, and a capable in-house movement makes this Navitimer an enduring piece within Breitling's chronograph lineup.
