Breitling · Colt

Strap for Colt Lady Silver / Bracelet

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
ReferenceA7738011.G600.813A
FamilyColt
MovementBreitling caliber 77 hours, minutes, seconds | date | chronometer
Year2014
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 A7738011.G600.813A

Selected for the 16 mm lug width

All 16 mm straps →

The Colt A7738011.G600.813A, seen from the bench

The Breitling Colt A7738011.G600.813A is a 33.20mm stainless steel tool watch from Breitling's Colt line, featuring the in-house Caliber 77 movement certified chronometer by COSC with ±4/+6 seconds per day accuracy. The watch includes hours, minutes, seconds, and date functions on a clean dial designed for operational readability. The lug width is 16mm, requiring replacement straps to match this exact specification at the attachment point to ensure proper fit without play or installation issues.

Frequently asked questions

What is the lug width of the Breitling Colt A7738011.G600.813A?

The Breitling Colt A7738011.G600.813A has a lug width of 16mm. This measurement should be taken with a digital calliper between the inner walls of the lugs, parallel to the case, to ensure a precise fit for any replacement strap.

What is the best strap for the Breitling Colt A7738011.G600.813A?

For the 33mm Colt, vegetable-tanned calf leather is recommended for everyday wear, alligator for formal occasions, and nylon NATO for sport or aviation use. A 16mm stainless steel pin buckle is the classic choice; a butterfly deployant clasp offers greater convenience and even pressure distribution on the wrist.

How do I change the strap on the Breitling Colt A7738011.G600.813A?

Strap replacement requires a fine-tip spring bar tool. Compress both ends of the spring bar within the lugs to release the strap without applying pressure to the case. Work on a soft surface to avoid scratching the steel finishing. No watchmaker intervention is required for this operation.

Are there aftermarket straps compatible with the Breitling Colt A7738011.G600.813A?

Yes. Any strap with a standard 16mm attachment and spring bars is compatible. Milanostraps.it offers a curated selection of 16mm straps in leather, alligator, NATO, and rubber, all handcrafted and sized for a precise fit to the Colt's lugs.

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

Longevity depends on material and use. A well-maintained vegetable-tanned calf strap typically lasts 2–4 years with daily wear. Alligator, thanks to its denser fibre structure, can exceed 5 years. Regular exposure to perspiration and water significantly shortens strap life; in such conditions rubber or nylon NATO straps are the preferable choice.

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