Technical Archive

Breitling
Colt A7438953.C913.238S— lug 18mm

Breitling Colt A7438953.C913.238S: 18mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Colt 36 Diamond / Mariner Blue / Rubber

Artisanal Note

"This model requires a precise 18mm lug width to preserve the original sartorial balance."

Technical Specifications

Breitling A7438953.C913.238S
Lug Width
18 mm

The essential strap measurement.

Browse 18mm straps →
Reference

A7438953.C913.238S

Movement

Breitling caliber Caliber B74 Hours, Minutes, Seconds | Date | Chronometer

The Heritage

The Colt represents Breitling's sporty line characterized by sturdiness and functionality. It is equipped with the B74 caliber with hour, minute, second and date functions, certified as a chronometer. The lugs measure 18mm in width.

FAQ

What is the lug width of the Breitling Colt A7438953.C913.238S?

The lug width of the Breitling Colt A7438953.C913.238S is 18mm. This measurement should be taken with a digital calliper at the inner contact point between the case lugs and the strap, ensuring a precise fit with no lateral play.

What is the best strap for the Breitling Colt A7438953.C913.238S?

For the Colt 36mm, vegetable-tanned calf leather or matte alligator are the most coherent choices given the tool-watch aesthetic of the brushed steel case. For sporting or marine use, a vulcanised rubber strap offers durability and practicality. A two-colour NATO is ideal for a field-watch register.

How do you change the strap on the Breitling Colt A7438953.C913.238S?

To replace the strap on the Colt A7438953.C913.238S, you will need a springbar tool: insert the tip into the lug slot, compress the spring bar and slide the strap free. Care should be taken to avoid scratching the brushed case; placing a soft cloth around the lugs as protection is advisable.

Are there aftermarket straps compatible with the Breitling Colt A7438953.C913.238S?

Yes. Any strap with an 18mm lug width and standard spring bars is compatible with the Breitling Colt A7438953.C913.238S. On milanostraps.it you will find a curated selection of handcrafted 18mm straps in various materials, with straight or tapered ends, available with a buckle or deployant clasp in brushed steel.

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

The lifespan of a leather strap depends on the material, the tanning process and daily use. A quality vegetable-tanned calf strap, with normal rotation, typically lasts 2–4 years. Shell cordovan and alligator have a denser, more resilient structure and tend to last considerably longer. Regular conditioning and avoiding prolonged water exposure will significantly extend the strap's life.