Breitling · Colt

Strap for Colt 36 Pearl Diamond / Sahara / 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/A771/215X/A16BA.1
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

The Colt A7438911/A771/215X/A16BA.1, seen from the bench

The Breitling Colt features the B74 caliber with hour, minute, second, date functions and chronometer certification. The case has 18mm lugs. The movement offers chronometric precision according to COSC standards.

Frequently asked questions

What is the lug width of the Breitling Colt A7438911/A771/215X/A16BA.1?

The lug width of the Breitling Colt A7438911/A771/215X/A16BA.1 is 18mm. This measurement is the standard dimension to consider when purchasing any compatible strap for this reference.

What is the best strap for the Breitling Colt 36mm with an 18mm lug width?

For the Breitling Colt 36mm, an alligator strap with vegetable tanning or a smooth calf leather strap in 18mm is the most coherent choice with the instrument-oriented vocation of the watch. A stainless steel deployant clasp completes the pairing with technical elegance. For sporting use, a nylon NATO or a vulcanised rubber strap are practical and durable solutions.

How do you change the strap on the Breitling Colt A7438911/A771/215X/A16BA.1?

To replace the strap on the Breitling Colt A7438911/A771/215X/A16BA.1, a spring bar tool is required to remove the spring bars from the case lugs. Insert the tool's tip into the side slot of the spring bar, compress the spring and slide the strap out. The operation is fully reversible and does not require specialist equipment, though care should be taken to avoid scratching the brushed stainless steel case.

Are there aftermarket straps compatible with the Breitling Colt 18mm lug width?

Yes, there are numerous high-quality aftermarket straps compatible with the Breitling Colt's 18mm lug width. Milano Straps offers a curated selection of handcrafted straps in leather, alligator, shell cordovan and technical materials, all fitted with 18mm spring bars to ensure a precise fit without adapters or case modifications.

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

The lifespan of a leather strap on a Breitling Colt depends on the type of leather, frequency of use and care. A vegetable-tanned alligator strap, properly maintained, can last between 3 and 5 years with regular wear. Calf leather typically lasts 2 to 3 years. Shell cordovan, owing to its dense fibre structure, is among the most durable options. Avoiding prolonged contact with water and perspiration, and occasionally applying a leather conditioner, will significantly extend the strap's service 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