Breitling · Top Time

Strap for Top Time B01 Ford Mustang / Calf

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter41 mm
ReferenceAB01762A1L1X1
FamilyTop Time
MovementBreitling caliber Caliber B01 ND Hours, Minutes, Small Seconds | Chronograph, Column wheel | 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 Top Time AB01762A1L1X1, seen from the bench

The Breitling Top Time B01 Ford Mustang is an iconic sports chronograph featuring a 41mm stainless steel case with a 20mm lug width. It is powered by the in-house Breitling Caliber B01 ND movement, a column-wheel chronograph certified COSC with a precision tolerance of +4/-6 seconds per day. The dial features a bi-compax layout with applied indices, small seconds register, and chronograph function, combining vintage aesthetics with contemporary engineering.

Frequently asked questions

What is the lug width of the Breitling Top Time AB01762A1L1X1?

The lug width of the Breitling Top Time AB01762A1L1X1 is 20mm. This measurement is taken between the two lugs using a digital calliper, at the point where the strap inserts into the case. Most straps with an 18mm taper at the buckle end are compatible with this reference.

What is the best strap for the Breitling Top Time AB01762A1L1X1?

The ideal choice depends on the context. For formal or business-casual wear, a Mississippiensis alligator strap in tobacco brown or navy blue enhances the bipartite dial. For daily sport use, a vegetable-tanned calfskin strap develops a distinctive patina over time. A nylon NATO strap is the most practical option for humid environments or travel.

How do I change the strap on the Breitling Top Time AB01762A1L1X1?

The strap is removed using a flat-tip or T-shaped spring bar tool. Compress the spring bars laterally and slide them out of the lugs. The entire operation takes approximately two minutes and requires no specialist watchmaking skills, though care should be taken not to scratch the steel lugs during removal.

Are there aftermarket straps compatible with the Breitling Top Time AB01762A1L1X1?

Yes. Any strap with a 20mm lug width is compatible with this reference. milanostraps.it offers a curated selection of handcrafted straps in alligator, calfskin, shell cordovan and NATO specifically for the 20mm lug size, with bespoke options available through the Casati Milano atelier.

How long does a leather strap last on a Breitling Top Time AB01762A1L1X1?

A quality leather strap — vegetable-tanned and hand-stitched — typically lasts between two and four years with daily wear, depending on exposure to perspiration and moisture. Shell cordovan and properly tanned alligator offer superior longevity. Rotating between two straps significantly extends the life of both.

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