Breitling · Navitimer

Strap for Navitimer 01 46 Red Gold / Black / Calf

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width24 mm
Case diameter46 mm
ReferenceRB012721.BD10.441X
FamilyNavitimer
MovementBreitling caliber B01 hours, minutes, small seconds | date | Chronograph, column wheel | chronometer
CaseRed Gold

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Navitimer RB012721.BD10.441X

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Navitimer RB012721.BD10.441X, seen from the bench

The Navitimer 01 46 Red Gold is a professional chronograph from Breitling's legendary aviation collection, conceived in 1952 for the AOPA. This 46mm red gold case houses the Breitling B01 caliber, an automatic chronograph movement certified COSC with column wheel, hour, minute, small seconds and date. The 24mm lug width is proportional to the large case diameter and typical of professional Breitling chronographs. The functional bezel slide rule and three chronograph counters maintain complex visual coherence requiring a strap that balances without overwhelming the dial.

Frequently asked questions

What is the lug width of the Breitling Navitimer RB012721.BD10.441X?

The lug width of the Breitling Navitimer RB012721.BD10.441X is 24mm. This is a substantial measurement, proportionate to the 46mm case diameter and characteristic of Breitling's large-format professional chronographs. Before purchasing an aftermarket strap, it is advisable to verify the measurement with a digital calliper in the internal space between the two lugs.

What is the best strap for the Breitling Navitimer RB012721.BD10.441X in red gold?

For the Navitimer RB012721.BD10.441X in red gold at 46mm, a Hornback alligator strap with vegetable tanning in tobacco, cognac or bordeaux tones is the most coherent pairing with the haute horlogerie character of this reference. Alternatively, polished black box calf creates an elegant contrast that highlights the metal. Shell cordovan is the choice for those seeking a niche material with a distinctive patina. All straps must have a 24mm attachment.

How do you change the strap on the Breitling Navitimer RB012721.BD10.441X?

To replace the strap on the Navitimer RB012721.BD10.441X, a fine-tipped spring bar tool is required. The red gold lugs demand particular care: it is advisable to protect the case with a soft cloth, apply gentle lever pressure to the end of the spring bar, and fit the new strap with spring bars of the correct dimensions for Breitling lugs. If in doubt, the operation can be carried out by a watchmaker or at the Casati Milano atelier.

Are there aftermarket straps compatible with the Breitling Navitimer RB012721.BD10.441X?

Yes. The Breitling Navitimer RB012721.BD10.441X uses a standard 24mm attachment with conventional spring bars, making it compatible with any quality aftermarket strap made to this lug width. On milanostraps.it, a selection of 24mm handcrafted leather straps is available — alligator, calfskin, shell cordovan — produced specifically for large-format chronographs such as this Navitimer.

How long does a leather strap last on the Breitling Navitimer RB012721.BD10.441X?

The lifespan of a leather strap depends on the material, care and intensity of use. A high-quality vegetable-tanned alligator strap, kept away from excessive moisture and periodically treated with appropriate products, can last between 3 and 7 years while developing an enviable patina. Box calf has a similar lifespan. Shell cordovan is the most resistant to long-term deformation. Casati Milano offers an 18-month warranty against manufacturing defects on all handcrafted straps.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only