Name: Navitimer B01 Chronograph 46
Brand: Breitling
SKU: RB0137241L1R1
Price: 49900 CHF
Availability: OutOfStock

Question 1

What is the Breitling Navitimer B01 Chronograph 46?

Accepted Answer

The Breitling Navitimer B01 Chronograph 46 is a large-format version of Breitling’s legendary pilot’s chronograph, designed for collectors who want the classic Navitimer look with a stronger wrist presence. This reference, RB0137241G1P1 , features a 46 mm case in 18k red gold, a silver dial, contrasting black subdials and outer slide rule, and a black alligator leather strap with an 18k red gold folding clasp. It keeps the Navitimer’s most recognizable design element : the circular slide-rule bezel, originally created to help pilots perform flight-related calculations. Inside the watch is Breitling’s in-house Breitling Manufacture Caliber 01 , a self-winding mechanical chronograph movement with an approximate 70-hour power reserve.

Question 2

What is the Navitimer and its slide rule used for?

Accepted Answer

The Navitimer is Breitling's legendary aviation chronograph; It was originally designed as a practical pilot’s watch , combining a chronograph stopwatch with a circular slide-rule bezel that could be used for flight-related calculations. Over time, the Navitimer became one of Breitling’s signature models and one of the most recognizable pilot watches in luxury watchmaking. The Navitimer’s slide rule is the scale around the dial and bezel. By rotating the bezel and aligning the numbers, the wearer can perform calculations related to speed, distance, fuel consumption, climb or descent rate, and unit conversions. For pilots, this type of tool was especially useful before digital cockpit instruments and electronic calculators became common. Discover the complete Navitimer collection.

Question 3

What does the chronograph do?

Accepted Answer

A chronograph is an independent stopwatch function built into the watch. It allows the wearer to measure elapsed time without affecting the normal timekeeping display. On a watch like the Breitling Navitimer B01 Chronograph , the main hour and minute hands continue showing the current time, while the chronograph hands and subdials are used to time a separate event. The chronograph is controlled by the pushers on the side of the case. Typically, the upper pusher starts and stops the timing function, while the lower pusher resets the chronograph hands back to zero. This makes it useful for timing short events , such as a flight segment, a meeting, a lap, a cooking interval, or any situation where you want a precise elapsed-time measurement.

Question 4

How do I use the chronograph and slide rule?

Accepted Answer

The chronograph and slide rule are two separate functions on the Navitimer. The chronograph is the stopwatch function, while the slide rule is the rotating calculation scale on the perimeter of the dial and the inside of the bezel. To use the chronograph, press the top pusher to start timing. Press the same top pusher again to stop timing. Once the chronograph has been stopped, press the bottom pusher to reset the chronograph hands back to zero. The main hour and minute hands continue to show the current time whether the chronograph is running or not. Be sure to stop the chronograph before resetting it . On most traditional chronographs, including watches like the Navitimer B01, the reset pusher cannot be pressed while the chronograph is still running. Resetting while the chronograph is running is only possible on flyback chronographs—which Breitling does not currently produce. The slide rule is used by rotating the bezel to align the moving scale with the fixed scale on the dial. Once the correct numbers are lined up, the scales can be used to calculate things like speed, distance, fuel consumption, rate of climb or descent, and unit conversions. It works like an analog calculator: the watch does not calculate automatically, but the aligned scales help you work out the answer.

Question 5

What movement powers the Navitimer B01 Chronograph 46?

Accepted Answer

The Navitimer B01 Chronograph 46 is powered by Breitling’s in-house Breitling 01 Manufacture automatic chronograph movement , often referred to as the B01 . It is a self-winding mechanical movement , meaning it winds itself as the watch is worn, while also offering manual winding through the crown. Breitling lists the movement for this Navitimer 46 reference as Breitling B01 (Manufacture) with an approximate 70-hour power reserve. The movement also drives the watch’s chronograph functions , allowing elapsed-time measurement in one eighth of a second, 30-minute, and 12-hour intervals on the Navitimer B01 Chronograph 46. Breitling’s technical data also lists a frequency of 28,800 vibrations per hour and 47 jewels for this reference

Question 6

What sizes does the Navitimer B01 Chronograph come in, and how does the 46 mm wear?

Accepted Answer

The Navitimer B01 Chronograph is available in three case sizes: 41 mm, 43 mm, and 46 mm — each housing the same Manufacture Caliber 01. The 43 mm (ref. AB0138211B1P1) is the mid-size option at 13.69 mm thick with a 22 mm lug width. At approximately 98 g total weight (77.2 g for the watch head), it has a substantial but balanced presence on the wrist. The 46 mm is ideal for those who prefer a bold, contemporary fit or have larger wrists . Its generous dial enhances the legibility of the chronograph subdials and the signature slide rule, while the domed sapphire crystal—glareproofed on both sides—adds depth to the dial and pays tribute to the original Navitimer design. To compare all available sizes, dial colors, materials, and strap options, explore the complete Navitimer collection .

Navitimer B01 Chronograph 46

Key features

Technical data

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