Technical Archive

Breitling
Top Time AB01761A1K1A1— lug 20mm

Breitling Top Time AB01761A1K1A1: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Top Time B01 Chevrolet Corvette / Mesh

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Breitling AB01761A1K1A1
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

AB01761A1K1A1

Movement

Breitling caliber Caliber B01 ND Hours, Minutes, Small Seconds | Chronograph, Column wheel | Chronometer

The Heritage

The Top Time represents the modern reissue of a Breitling chronograph from the 1960s. It is equipped with the automatic B01 caliber with chronograph function, column wheel and chronometer certification. The lugs measure 20mm in width.

FAQ

What is the lug width of the Breitling Top Time AB01761A1K1A1?

The Breitling Top Time AB01761A1K1A1 features a lug width of 20mm. This measurement refers to the internal distance between the two lugs of the case and is the essential specification for selecting a compatible strap. A 20mm strap fits without any adapters and ensures a precise, secure fit.

What is the best strap for the Breitling Top Time AB01761A1K1A1?

The ideal choice depends on the intended context. For a sport-elegant aesthetic, an alligator strap with a matte finish in black or navy blue pairs excellently with the stainless steel case. For daily wear, a vegetable-tanned calf leather strap in tobacco develops a distinctive patina over time. A nylon NATO strap is the most historically coherent option, referencing the racing heritage of the original Top Time.

How do you change the strap on the Breitling Top Time AB01761A1K1A1?

The strap is removed using a springbar tool, a forked instrument that compresses the springbars housed within the lugs. Inserting the tip into the lug hole or between the strap and the case allows the springbar to be compressed and the strap to be detached. This is a straightforward operation that does not require a service centre visit, though care should be taken to avoid scratching the case.

Are there compatible aftermarket straps for the Breitling Top Time AB01761A1K1A1?

Yes. The standard 20mm lug width ensures full compatibility with the wide range of quality aftermarket straps available on milanostraps.it. It is important to confirm that the buckle end width also matches — typically 18mm for a 20mm strap — and that the springbars supplied are of the correct diameter and length for the Breitling Top Time lugs.

How long does a leather strap last on the Breitling Top Time AB01761A1K1A1?

The lifespan of a leather strap depends on the quality of the tanning process, frequency of use, and daily care. A quality vegetable-tanned calf leather strap, worn regularly, typically lasts 12 to 24 months. Shell cordovan, owing to the density of its fibres, can exceed three years of use. Avoiding prolonged exposure to water and perspiration, and rotating between multiple straps, will significantly extend the material's service life. Casati Milano provides an 18-month guarantee against manufacturing defects.