Breitling · Colt

Strap for Colt 33 Blue / Calf

Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width16 mm
Case diameter33 mm
ReferenceA7738711.C850.116X
FamilyColt
MovementBreitling caliber Caliber 77 Hours, Minutes, Seconds | Date | Chronometer
CaseStainless 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 Colt A7738711.C850.116X

Selected for the 16 mm lug width

All 16 mm straps →

The Colt A7738711.C850.116X, seen from the bench

The Breitling Colt A7738711.C850.116X belongs to a line designed for those who demand no compromise between aesthetics and functionality. Born from Breitling's aeronautical culture, this 33mm stainless steel case watch features a Breitling 77 mechanical movement with COSC certification, guaranteeing precision within -4/+6 seconds daily. The mixed-finish case highlights the bezel geometry, while the dial maintains the visual density typical of technical instruments. The 16mm lug width is a selective dimension in contemporary technical watches, requiring straps specifically produced at that width without adaptations.

Frequently asked questions

What is the lug width of the Breitling Colt A7738711.C850.116X?

The lug width of the Breitling Colt A7738711.C850.116X is 16mm. This measurement should be taken with a digital calliper in the space between the lugs, flush against the case, to ensure an accurate reading and select a strap that fits without play or tension.

What is the best strap for the Breitling Colt A7738711.C850.116X?

For the Breitling Colt A7738711.C850.116X with its 33mm stainless steel case, a vegetable-tanned calf leather strap is the most versatile choice, developing a natural patina suited to both formal and casual contexts. Square-scale alligator works well for dressy pairings, whilst ballistic nylon NATO and vulcanised rubber address sporting requirements. All straps must have an exact 16mm lug width.

How do you change the strap on the Breitling Colt A7738711.C850.116X?

To replace the strap on the Breitling Colt A7738711.C850.116X, use a fine-tipped spring bar tool inserted between the lug and strap to compress and release the spring bars. Work on a soft pad to protect the stainless steel case from scratches. The new 16mm spring bar must be inserted into the strap holes before fitting.

Are there aftermarket straps compatible with the Breitling Colt A7738711.C850.116X?

Yes. The Breitling Colt A7738711.C850.116X uses standard 16mm spring bars, compatible with a wide range of high-quality aftermarket straps. Milano Straps offers handcrafted straps in alligator, calf leather, shell cordovan, and woven materials, specifically produced for a 16mm lug width, with buckles and keepers proportioned to the 33mm case.

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

The lifespan of a leather strap depends on the quality of the tanning, the thickness of the belly, and conditions of use. A superior-grade calf or alligator strap, regularly conditioned and protected from excessive moisture, typically lasts between 2 and 4 years with daily wear. Shell cordovan, owing to its dense fibrous structure, tends to offer greater longevity. Milano Straps provides an 18-month warranty 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