Breitling · Colt

Strap for Colt 36 Stratus Silver / 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/G803/239X/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/G803/239X/A16BA.1, seen from the bench

The Breitling Colt A7438911/G803/239X/A16BA.1 is a 36mm stainless steel instrument watch featuring the Breitling B74 caliber with COSC Chronometer certification, guaranteeing precision between -4 and +6 seconds per day. The 18mm lug width accommodates a wide range of aftermarket straps. With applied indices, luminescent hands, and a screw-down crown for water resistance, this compact yet substantial Colt balances professional capability with wearable proportions.

Frequently asked questions

What is the lug width of the Breitling Colt A7438911/G803/239X/A16BA.1?

The lug width of the Breitling Colt A7438911/G803/239X/A16BA.1 is 18mm. This measurement is taken with a digital calliper positioned transversally between the two lugs at the point where the strap attaches to the case. Adhering to this specification is essential to ensure a secure fit and correct visual proportions.

What is the best strap for the Breitling Colt 36mm A7438911?

For the Breitling Colt A7438911/G803/239X/A16BA.1, vegetable-tanned calf leather is the most versatile option for everyday wear, developing a distinguished patina over time. Alligator belly leather suits formal occasions, while shell cordovan is the premium choice for those prioritising longevity and a noble ageing process. For sport or outdoor use, a ballistic nylon NATO strap preserves the tool watch character of the model.

How do I change the strap on the Breitling Colt A7438911/G803/239X/A16BA.1?

Strap removal requires a spring bar tool with a flat forked tip. Insert the tool into the slot between the lug and the strap to compress the spring bar, releasing it from the hole in the lug — first on one side, then the other. No professional equipment is needed, though care should be taken to avoid scratching the stainless steel case. Place the watch face-down on a soft cloth before proceeding.

Are there aftermarket straps compatible with the Breitling Colt 36mm?

Yes, any strap with an 18mm attachment width is technically compatible with the Breitling Colt A7438911/G803/239X/A16BA.1. Milanostraps.it offers a curated selection of handcrafted straps in calf leather, alligator, shell cordovan and nylon, all designed to fit the 18mm lug width of this model with stitching and thickness calibrated to the Breitling case geometry.

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

The lifespan of a leather strap depends on the material, care and frequency of use. A good-quality vegetable-tanned calf strap typically lasts 2–4 years with daily wear. Alligator and shell cordovan, owing to their dense fibre structure, can exceed 5 years if kept away from excessive moisture and periodically conditioned with a suitable leather cream. Casati Milano straps carry an 18-month guarantee against manufacturing defects.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only