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Breitling · Colt

Strap for Colt 36 Volcano Black / Bracelet

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

Lug width

18mm
18 mm strapsAll Breitling
Lug width18 mm
Case diameter36 mm
ReferenceA7438911/BD82/178A
FamilyColt
MovementBreitling caliber 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

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The Colt A7438911/BD82/178A, seen from the bench

The Breitling Colt 36 Volcano Black features a 36mm stainless steel case with satin-finished flat surfaces and polished lugs. It is equipped with the COSC-certified B74 automatic movement, offering precision of ±4 seconds per day. The dial includes hours, minutes, seconds, date, and a fixed bezel with tachymetric scale. The lug width is 18mm. This model combines aviation heritage with proportions consistent with 1960s and 1970s pilot watches, designed for functionality and readability rather than decoration.

Frequently asked questions

What is the lug width of the Breitling Colt A7438911/BD82/178A?

The Breitling Colt A7438911/BD82/178A has a lug width of 18mm, measured internally between the two lugs of the stainless steel case. This can be verified using a digital calliper placed inside the upper lug gap.

What is the best strap for the Breitling Colt A7438911/BD82/178A?

For the Colt 36mm with a satin-brushed stainless steel case, the most suitable options include vegetable-tanned alligator for an elegant-sport register, vintage grain calfskin for a classic pilot watch aesthetic, and nylon NATO for dynamic everyday use. All straps must fit an 18mm lug width.

How do I change the strap on a Breitling Colt A7438911/BD82/178A?

The strap is removed using a double-tip spring bar tool to lever out the spring bars housed within the case lugs. This can be done independently with the correct tools, or carried out by the Casati Milano atelier by appointment.

Are there aftermarket straps compatible with the Breitling Colt A7438911/BD82/178A?

Yes: any strap with an 18mm lug width and standard spring bars is compatible. Milano Straps offers a curated selection of handcrafted 18mm straps compatible with the Colt, available in leather, alligator, shell cordovan, NATO and rubber, with buckle or deployant clasp.

How long does a leather strap last on a Breitling Colt A7438911/BD82/178A?

A quality leather strap, properly maintained and alternated with a second strap, typically lasts between 2 and 4 years. Vegetable-tanned alligator and shell cordovan tend to have superior longevity, developing a distinctive patina without premature deterioration.

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