Reference AB0137241L1P1 is the large-format Breitling Navitimer B01 Chronograph 46, and this super clone pairs a rich green dial with a steel case and a black alligator-pattern leather strap. At 46mm, this is the biggest Navitimer Breitling produces — the extra diameter opens up the circular slide-rule bezel and improves the spacing of the three chronograph registers for maximum legibility. The bigger bezel also makes the slide rule easier to work with, and our guide covers the slide-rule sums for ground speed and climb rate that pilots relied on.

Specifications

• Model: Navitimer B01 Chronograph 46 (2022 generation)
• Reference: AB0137241L1P1
• Case size: 46 mm
• Case: stainless steel
• Dial: green with black subdials
• Bezel: bidirectional circular slide rule
• Crystal: sapphire, anti-reflective coating
• Strap: black alligator-pattern leather
• Movement: clone Cal. B01, automatic chronograph (column wheel, vertical clutch), 28,800 vph
• Functions: hours, minutes, seconds, chronograph, date
• Power reserve: 55 hours (genuine Cal. B01: 70 hours)
• Water resistance: 30 m (same as genuine)

Green Sunburst With Black Counters

The green dial is a modern departure from the traditional black and silver Navitimer palette, tapping into the broader surge in green sports dials. Against the steel case and black leather strap, the green reads deep and slightly sunburst, with the beaded slide-rule bezel framing the dial in polished steel.

Navitimer B01 Chronograph 46 Movement and Slide Rule

The automatic chronograph movement runs at 28,800 vibrations per hour and drives the tri-compax register layout with running seconds, a 30-minute counter and a 12-hour counter. Fully wound, this clone Cal. B01 keeps going for about 55 hours; the genuine B01 is rated at 70. The slide-rule bezel remains fully functional, rotating bidirectionally for flight-style calculations. For a time-only 41mm green Navitimer on a green alligator strap, see the green-dial Navitimer Automatic 41 A17329371L1P1. Browse the full Navitimer collection for more references.

Wearing 46 mm of Green Navitimer

At 46mm, this Navitimer makes a deliberate statement — the slide-rule bezel and busy dial read as an instrument first and an accessory second. The green dial modernizes the aviation heritage without abandoning it, and the black leather strap keeps the large case grounded. This super clone is built for larger wrists that want maximum Navitimer presence; on a slimmer wrist, measure lug to lug before choosing 46 mm over 43 mm.