Breitling · Colt

Strap for Colt 36 Stratus Silver / Calf / Pin

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter36 mm
ReferenceA7438911/G803/416X/A16BA.1
FamilyColt
MovementBreitling caliber B74 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 A7438911/G803/416X/A16BA.1

Selected for the 18 mm lug width

All 18 mm straps →

The Colt A7438911/G803/416X/A16BA.1, seen from the bench

The Breitling Colt A7438911/G803/416X/A16BA.1 is a 36mm stainless steel aviation tool watch from the Colt line, featuring the Breitling Caliber B74 movement with COSC Chronometer certification (±4 seconds per day). It offers hours, minutes, seconds, and date complications, with a unidirectional composite bezel and 18mm lug width. The case combines brushed sides with polished lugs, designed for balanced proportions on medium and slim wrists without sacrificing presence.

Frequently asked questions

What is the lug width of the Breitling Colt A7438911/G803/416X/A16BA.1?

The Breitling Colt A7438911/G803/416X/A16BA.1 has a lug width of 18mm. This measurement is taken with a calliper positioned internally between the two lugs, at the point where the strap meets the case. It is a structural specification of the 36mm variant and differs from the larger-diameter Colt models.

What is the best strap for the Breitling Colt A7438911/G803/416X/A16BA.1?

For the Colt 36mm with a black dial, a vegetable-tanned Tuscan calf leather strap in tobacco brown or a grey shell cordovan are pairings that complement the case's restrained proportions. An Hornback alligator strap with contrast stitching adds formal character without undermining the watch's instrumental nature. For sporting contexts, a vulcanised rubber strap with a brushed steel buckle is the most practical option.

How do I change the strap on the Breitling Colt A7438911/G803/416X/A16BA.1?

Strap replacement requires a spring bar tool to remove the spring bars securing the strap to the lugs. This can be done independently with care, or entrusted to a watchmaker or the Casati Milano atelier. It is advisable to work on a soft surface to prevent scratching the case.

Are there aftermarket straps compatible with the Breitling Colt A7438911/G803/416X/A16BA.1?

Yes. Any strap with an 18mm attachment width and a 16mm tail width is compatible with the Breitling Colt A7438911/G803/416X/A16BA.1. Milano Straps offers a curated selection of handcrafted leather, rubber and nylon straps pre-filtered for 18mm lugs, with full personalisation options for material, colour and stitching.

How long does a leather strap last on a Breitling Colt A7438911/G803/416X/A16BA.1?

Longevity depends on the material, frequency of wear and care taken. A quality vegetable-tanned calf strap worn daily typically lasts 18 to 36 months before the buckle or stitching shows structural wear. Shell cordovan and alligator offer superior durability, often exceeding three years. Avoiding prolonged exposure to water and perspiration significantly extends strap life.

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