Breitling · Top Time

Strap for Top Time B31 Stainless Steel / Green / Bracelet

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

Lug width20 mm
Case diameter38 mm
ReferenceAB3113171L1A1
FamilyTop Time
MovementBreitling caliber Caliber B31 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 Top Time AB3113171L1A1, seen from the bench

The Top Time is a Breitling chronograph equipped with the automatic B31 chronometer certified movement. The movement offers hour, minute, second and date indication, as well as chronograph function. The watch features 20mm lugs for the strap.

Frequently asked questions

What is the lug width of the Breitling Top Time AB3113171L1A1?

The Breitling Top Time AB3113171L1A1 features a lug width of 20 mm. This measurement should be confirmed using a digital calliper placed between the inner walls of the lugs to ensure full compatibility with any aftermarket strap.

What is the best strap for the Breitling Top Time AB3113171L1A1?

Given the vintage-sport character of the Top Time, a vegetable-tanned alligator strap is the most refined choice for formal occasions, whilst a grained calf leather strap offers everyday versatility. A NATO nylon strap authentically references the racing heritage of the original 1960s design.

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

To replace the strap on the Breitling Top Time, you will need a spring bar tool. Insert the tip into the notch of the spring bar and compress it to release the strap from the lug. The procedure takes approximately two minutes and requires no professional equipment, though it is advisable to work on a soft surface to avoid scratching the case.

Are there aftermarket straps compatible with the Breitling Top Time AB3113171L1A1?

Yes. Any strap with a 20 mm attachment width is compatible with the Breitling Top Time AB3113171L1A1. Milano Straps offers a curated selection of handcrafted 20 mm straps in alligator, calf leather, shell cordovan and NATO, available bespoke or ready to ship online.

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

The lifespan of a leather strap depends on the type of leather, maintenance and daily use. A quality vegetable-tanned alligator strap can last between 3 and 7 years with regular conditioning (leather cream every 3 to 4 months, avoiding prolonged exposure to perspiration and water). Shell cordovan develops a distinctive patina over time and tends to outlast most other leathers due to the dense structure of the hide.

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