Breitling · Colt

Strap for Colt 36 Stratus Silver / Rubber / 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/G803/230S/A16S.1
FamilyColt
MovementBreitling 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

Straps for the Colt A7438911/G803/230S/A16S.1

Selected for the 18 mm lug width

All 18 mm straps →

The Colt A7438911/G803/230S/A16S.1, seen from the bench

The Breitling Colt features the B74 caliber with chronometer certification and functions of hours, minutes, seconds and date. The case has 18mm lugs. The movement offers chronometric indication of hours, minutes and seconds with a date complication.

Frequently asked questions

What is the lug width of the Breitling Colt A7438911/G803/230S/A16S.1?

The lug width of the Breitling Colt A7438911/G803/230S/A16S.1 is 18 millimetres. This measurement is taken with a digital calliper placed between the two lugs, perpendicular to the vertical axis of the case. All aftermarket straps with an 18 mm attachment are compatible with this reference.

What is the best strap for the Breitling Colt A7438911/G803/230S/A16S.1?

For a 36 mm case in brushed steel such as the Colt A7438911/G803/230S/A16S.1, a vegetable-tanned calf leather strap is the most balanced choice for daily wear, owing to its compact grain and ability to develop a natural patina. Semi-matte alligator is appropriate for formal settings, whilst a heavy nylon NATO strap reinforces the instrumental identity of the Colt line.

How do you change the strap on a Breitling Colt A7438911/G803/230S/A16S.1?

The strap of the Breitling Colt A7438911/G803/230S/A16S.1 is secured by standard 18 mm spring bars. To replace it, insert a fine-tipped spring bar tool into the slot on the side of the lug, compress the spring bar and slide out the strap. The operation requires no specialised tools and can be performed carefully without professional assistance.

Are there aftermarket straps compatible with the Breitling Colt A7438911/G803/230S/A16S.1?

Yes. Any aftermarket strap with an 18 mm attachment is compatible with the Breitling Colt A7438911/G803/230S/A16S.1. Milano Straps offers a curated selection of handcrafted leather, rubber and nylon straps in this width, with finishes suited to the brushed steel case of this reference.

How long does a leather strap last on a Breitling Colt A7438911/G803/230S/A16S.1?

The lifespan of a leather strap depends on the material, the tanning process and daily use. A quality vegetable-tanned calf strap, maintained regularly with a leather conditioner, retains structural integrity for 2 to 4 years of continuous wear. Shell cordovan, owing to the density of the horse's cordovan muscle fibres, can exceed 5 years. Prolonged exposure to water and perspiration significantly reduces the strap's lifespan regardless of material.

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