Breitling · Colt

Strap for Colt Lady Diamond / Pearl / 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
ReferenceA7738853/A770/175A
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 A7738853/A770/175A

Selected for the 16 mm lug width

All 16 mm straps →

The Colt A7738853/A770/175A, seen from the bench

The Breitling Colt features the 77 caliber with hour, minute, second, date functions and chronometer certification. The model has 16mm lugs and is characterized by its essential functionalities oriented towards sporty use. The reference A7738853/A770/175A belongs to the Colt line of the Swiss brand.

Frequently asked questions

What is the lug width of the Breitling Colt A7738853/A770/175A?

The Breitling Colt A7738853/A770/175A features a lug width of 16mm. This is an atypical measurement for Breitling models, which typically range between 20 and 22mm. This specificity requires either bespoke straps or carefully selected aftermarket options compatible with a 16mm attachment.

What is the best strap for the Breitling Colt A7738853/A770/175A?

For a 33mm stainless steel case such as the Colt's, the most appropriate straps are fine-grain alligator belly, vegetable-tanned calf leather, or vulcanised rubber for sport use. Calf leather develops a natural patina over time that complements the restrained character of the dial. A brushed stainless steel deployant clasp completes the most refined configuration.

How do you change the strap on a Breitling Colt A7738853/A770/175A?

Strap replacement is carried out via the spring bars housed within the case lugs. Using a springbar tool, compress the bars laterally to release the strap. It is advisable to work on a soft surface to protect the steel case from scratches. If in doubt, a qualified watchmaker can perform the operation within minutes.

Is there an aftermarket strap compatible with the Breitling Colt A7738853/A770/175A?

Yes. Any strap with a 16mm lug width and standard spring bars is technically compatible with the Colt A7738853/A770/175A. Milano Straps offers a curated selection of handcrafted 16mm straps in various materials, with bespoke customisation available through the Casati Milano atelier.

How long does a leather strap last on a Breitling Colt A7738853/A770/175A?

Longevity depends on the material and frequency of use. A vegetable-tanned calf leather strap, with regular care, typically lasts between 2 and 4 years. A high-quality alligator strap can exceed 5 years while retaining its structure. Prolonged exposure to perspiration, water and UV light accelerates deterioration. Casati Milano provides an 18-month warranty against manufacturing defects on all bespoke straps.

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