Breitling · Navitimer

Strap for Navitimer GMT 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 diameter48 mm
ReferenceRB044121.BD30.441X
FamilyNavitimer
MovementBreitling caliber B04 hours, minutes, small seconds, Additional 24 hours Hand (adjustable) | date | Chronograph, column wheel | chronometer
Year2014
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 RB044121.BD30.441X

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Navitimer RB044121.BD30.441X, seen from the bench

The Navitimer GMT Red Gold / Black model features a 48mm case in 18k red gold with Breitling's in-house B04 chronograph movement, COSC-certified, equipped with column wheel and an independent 24-hour hand for dual time-zone tracking. The 24mm lug width is a critical specification requiring purposefully manufactured straps, as it exceeds standard luxury sports watch dimensions of 20–22mm. The black dial with three counters and bidirectional bezel demands precision-fitted aftermarket straps without lateral gaps or asymmetric tension on the caseback.

Frequently asked questions

What is the lug width of the Breitling Navitimer RB044121.BD30.441X?

The lug width of the Breitling Navitimer RB044121.BD30.441X is 24mm. This is an unusually wide measurement compared to most luxury sports chronographs, which typically feature 20–22mm lugs. It is therefore essential to select straps manufactured specifically for 24mm lug widths, rather than attempting to trim wider straps or use adapters.

What is the best strap for the Breitling Navitimer RB044121.BD30.441X in Red Gold?

For a 48mm Red Gold case, the most appropriate strap is an alligator leather one with vegetable tanning, preferably in tobacco, burgundy or gloss black. Alligator develops a patina over time that harmonises naturally with the ageing of the red gold case. Shell cordovan is a refined alternative for those who prefer a denser, more understated aesthetic. The ideal closure is a deployant clasp or an ardillon buckle in rose gold.

How do you change the strap on the Breitling Navitimer RB044121.BD30.441X?

To replace the strap on the Navitimer RB044121.BD30.441X, a dual-tip springbar tool is required to compress the spring bars seated within the 24mm lugs without scratching the red gold case. It is advisable to work on a soft surface with the watch face down, using a springbar tool with coated tips. Given the non-standard 24mm lug width, entrusting the operation to a watchmaker or specialist atelier is strongly recommended.

Are there aftermarket straps compatible with the Breitling Navitimer RB044121.BD30.441X?

Yes, aftermarket straps compatible with the Breitling Navitimer RB044121.BD30.441X do exist, though availability is more limited than for standard sizes. The 24mm lug width requires straps made specifically to that measurement or crafted bespoke by artisan workshops. Milano Straps offers a selection of 24mm straps in leather, alligator and other materials, available both ready-to-ship online and made to order through the Casati Milano atelier.

How long does a leather strap last on the Breitling Navitimer RB044121.BD30.441X?

The lifespan of a leather strap depends on the quality of the hide, frequency of wear and level of care. A high-quality alligator or shell cordovan strap with vegetable tanning can last between 3 and 7 years with regular use, developing a patina that enhances its character over time. Prolonged exposure to water and perspiration should be avoided; occasional application of a neutral leather conditioner is recommended, and the strap should be replaced at the first signs of structural wear at the lugs.

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