Breitling · Colt

Strap for Colt 33 Silver / 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.G744.408X
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.G744.408X

Selected for the 16 mm lug width

All 16 mm straps →

The Colt A7738711.G744.408X, seen from the bench

The Colt represents Breitling's sporty line, characterized by the automatic Caliber 77 movement with hour, minute, second and date functions. The caliber is COSC chronometer certified to ensure accuracy. The watch features 16mm lugs and reference A7738711.G744.408X.

Frequently asked questions

What is the lug width of the Breitling Colt A7738711.G744.408X?

The lug width of the Breitling Colt A7738711.G744.408X is 16mm. This measurement must be taken internally between the two lugs using a digital calliper to ensure proper compatibility with aftermarket straps.

What is the best strap for the Breitling Colt 33mm?

For the stainless steel Breitling Colt 33mm, a centre-cut alligator strap or a vegetable-tanned calf leather strap aligns best with the instrument aesthetic of the case. For sporting or daily use, a ballistic nylon NATO or vulcanised rubber strap offers durability without compromising character.

How do you change the strap on the Breitling Colt A7738711.G744.408X?

Use a fine-tipped spring bar tool inserted into the lug hole or between the spring bar and the case to release the strap. Apply gentle leverage to avoid scratching the brushed steel. Replacement spring bars must measure 16mm in internal width to fit the Breitling Colt's lug geometry.

Are there compatible aftermarket straps for this Breitling Colt?

Yes. Milanostraps.it offers a dedicated selection of 16mm straps compatible with the Breitling Colt A7738711.G744.408X, available in leather, alligator, shell cordovan, NATO, and rubber. Casati Milano bespoke straps are handcrafted to order with full customisation options.

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

The lifespan of a leather strap depends on the tanning quality, frequency of wear, and maintenance. A high-quality vegetable-tanned calf strap, kept away from moisture and treated periodically with natural wax, typically lasts 2 to 4 years. Alligator and shell cordovan, due to their dense fibre structure, tend to last longer whilst developing a desirable patina.

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