Breitling · Cockpit

Strap for Chrono Cockpit

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter39 mm
ReferenceC1335812B899
FamilyCockpit
MovementBreitling caliber 13 hours, minutes, small seconds | date | Chronograph
Year2005 - 2010
CaseRed Gold, Stainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Cockpit C1335812B899

Selected for the 20 mm lug width

All 20 mm straps →

The Cockpit C1335812B899, seen from the bench

The Breitling Cockpit C1335812B899 is a 39mm bicolor sports watch combining red gold and steel, featuring the Breitling Caliber 13 automatic movement (COSC-certified, derived from ETA Valjoux 7754) with chronograph, small seconds, and date functions. The 20mm lug width represents the standard in the sport-luxury segment, with slightly downward-curved lugs best suited to straight or gently pre-curved strap ends. The integrated case architecture unifies the steel body with red gold 18K lugs and bezel, balancing operational robustness with refined elegance.

Frequently asked questions

What is the lug width of the Breitling Cockpit C1335812B899?

The Breitling Cockpit C1335812B899 has a lug width of 20 mm. This measurement refers to the internal distance between the two lugs at the strap attachment point and can be verified with a digital calliper. It is the most common standard in the sport-luxury segment, ensuring a wide availability of compatible straps.

What is the best strap for the Breitling Cockpit C1335812B899?

For the two-tone rose gold and steel version, a glossy alligator strap in tobacco or cognac is the most coherent choice, complementing the warm tonal register of the rose gold. Shell cordovan is ideal for those seeking a strap that develops a rich patina over time. For a more functional aesthetic, a technical rubber or vegetable-tanned leather strap restores the Cockpit's original instrumental character.

How do I change the strap on a Breitling Cockpit C1335812B899?

The strap is removed using a spring bar tool with a fine tip, applying gentle lever pressure on the spring bar inside the lug. The Cockpit uses standard 20 mm spring bars, which are widely available. It is advisable to work on a soft surface to protect the two-tone case from scratches, or to entrust the replacement to a watchmaker or to the Casati Milano atelier.

Are there aftermarket straps compatible with the Breitling Cockpit C1335812B899?

Yes, the 20 mm lug width of the Cockpit C1335812B899 is compatible with the full range of aftermarket straps in this size. Milano Straps offers a curated selection of handcrafted straps — alligator, calf, shell cordovan, NATO and rubber — all produced at 20 mm at the lug end and 18 mm at the buckle, the standard taper for this model.

How long does a leather strap last on a Breitling Cockpit?

The lifespan of a leather strap depends on the quality of the tanning process, daily care, and exposure to perspiration and moisture. A handcrafted alligator or shell cordovan strap, regularly treated with nourishing cream and kept away from heat sources, can last between 3 and 7 years with regular wear. Casati Milano straps carry an 18-month guarantee against manufacturing defects.

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