Breitling Navitimer 1 B01 Chronograph

At 46mm this is the Navitimer at full scale, the size that gives the circular slide rule room to be genuinely usable rather than decorative. Developed with the Aircraft Owners and Pilots Association in 1952, that rotating bezel calculates fuel burn, rate of climb, distance and unit conversions — and still works exactly as designed. Driving the chronograph is the Manufacture Calibre 01, in-house, COSC-certified, visible through the sapphire caseback.

Reference: AB0137241L1P1
Movement: Automatic chronograph, Manufacture Calibre 01, COSC chronometer
Power reserve: approx. 70 hours
Case: Stainless steel, 46 mm
Water resistance: 30 m
Year: 2026 — Full set