Breitling Navitimer AB0139 41 mm

AB0139 distils the Navitimer B01 Chronograph into a 41 mm stainless-steel case, bringing the slide-rule bezel and tri-register arrangement to the most compact size in this trio. A cambered sapphire crystal, glareproofed on both sides, protects the dial; the see-through back and Super-LumiNova add contemporary touches without disturbing the instrument-like composition. The 30-metre rating reflects the watch's focus on precision timing, travel and everyday urban wear.

Its Manufacture Calibre B01 is an automatic 4 Hz chronograph with 47 jewels and 70 hours of autonomy. The column wheel governs the chronograph, while a vertical clutch helps engage it cleanly and limits unwanted stutter in the running seconds. A date indication rounds out a movement that combines technical sophistication with a straightforward daily rhythm.