Breitling · Colt

Strap for Chronomat Colt 44 Automatic Black / Bracelet

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter44 mm
ReferenceA17388101B1A1
FamilyColt
MovementBreitling caliber 17 hours, minutes, seconds | date
Year2018
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 A17388101B1A1

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Colt A17388101B1A1, seen from the bench

The Breitling Colt A17388101B1A1 is a 44mm tool watch with a unidirectional bezel and high-contrast dial. It houses the Breitling 17 caliber automatic movement (derived from ETA 2824-2, COSC certified) offering hours, minutes, seconds, date, and approximately 38 hours of power reserve. The stainless steel 316L case is water-resistant to 200 meters with a screw-down caseback and anti-reflective sapphire crystal. The 22mm lug width accommodates various strap options for professional and daily use.

Frequently asked questions

What is the lug width of the Breitling Colt A17388101B1A1?

The Breitling Colt A17388101B1A1 has a lug width of 22mm. This measurement refers to the internal distance between the two lugs of the case, best verified using a calliper placed flush against the caseback. Any replacement strap must feature a 22mm attachment to ensure a precise and secure fit.

What is the best strap for the Breitling Colt A17388101B1A1?

The ideal choice depends on context. For formal occasions, a vegetable-tanned alligator strap in 22mm accentuates the depth of the blue dial. For everyday sporting use, a pulled-up calf leather or ballistic nylon NATO strap is more appropriate. For aquatic environments, a vulcanised FKM rubber strap provides full waterproofing consistent with the case's 200m water resistance rating.

How do you change the strap on the Breitling Colt A17388101B1A1?

The strap is removed using a flat-tipped or double-pronged spring bar tool, applying gentle lateral pressure to release the spring bar seated within the lugs. It is advisable to work on a soft surface to prevent scratches to the case. The operation takes approximately two minutes and does not require professional tools, provided the correct spring bar diameter for 22mm lugs is used.

Are there aftermarket straps compatible with the Breitling Colt A17388101B1A1?

Yes. Any strap with a 22mm attachment and standard spring bars is compatible with the Breitling Colt A17388101B1A1. Milano Straps offers a curated selection of handcrafted leather, NATO and rubber straps tailored to 22mm lugs, with buckle and keeper proportioned to complement the 44mm case diameter.

How long does a leather strap last on a Breitling Colt A17388101B1A1?

Longevity depends on the type of leather, frequency of wear and exposure to perspiration and moisture. A quality vegetable-tanned alligator strap, with regular use and periodic conditioning, can last between three and six years. A pulled-up or waxed calf leather strap typically lasts two to four years, developing a distinctive patina over time. Milano Straps provides an 18-month guarantee against manufacturing defects on all 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