Breitling · Top Time

Strap for Top Time B31 Stainless Steel / Silver / 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
ReferenceAB3113281A1A1
FamilyTop Time
MovementBreitling caliber B31 hours, minutes, seconds | date | chronometer
Year2025
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 Top Time AB3113281A1A1

Selected for the 20 mm lug width

All 20 mm straps →

The Top Time AB3113281A1A1, seen from the bench

The Breitling Top Time B31 Stainless Steel model (reference AB3113281A1A1) features a 38mm stainless steel case housing the B31 automatic movement, certified COSC chronometer. The watch displays hours, minutes, seconds, and date with functional readability. The lug width is 20mm, compatible with a wide range of strap materials and finishes designed to suit the vintage-sports character of the Top Time collection.

Frequently asked questions

What is the lug width of the Breitling Top Time AB3113281A1A1?

The Breitling Top Time AB3113281A1A1 has a lug width of 20mm. This measurement is taken using a digital calliper positioned between the two lugs at the point where the strap meets the case. Accurate measurement is essential to ensure the replacement strap fits correctly and sits flush with the case.

What is the best strap for the Breitling Top Time AB3113281A1A1?

The most suitable materials for the Breitling Top Time AB3113281A1A1 are: vegetable-tanned alligator for a sporting-elegant pairing that develops a natural patina over time, box calf leather for formal occasions, vulcanised rubber for daily sporting use, and woven nylon NATO to reference the model's original 1960s racing heritage. The ideal choice depends on dial colour and intended use.

How do you change the strap on a Breitling Top Time AB3113281A1A1?

To replace the strap on the Breitling Top Time AB3113281A1A1, use a spring bar tool or lever tool to remove the spring bars housed within the lugs. Rest the watch on a soft pad to avoid scratching the case or bezel. The operation does not require opening the case or specialist watchmaking tools, but should be performed carefully to avoid damaging the lug tubes.

Are there aftermarket straps compatible with the Breitling Top Time AB3113281A1A1?

Yes. Any 20mm straight-end strap is technically compatible with the Breitling Top Time AB3113281A1A1. Milanostraps.it offers a curated selection of handcrafted 20mm straps in various materials and finishes, including bespoke options made to order by the Casati Milano atelier to ensure an optimal match with the Top Time's stainless steel case.

How long does a leather strap last on a Breitling Top Time AB3113281A1A1?

The lifespan of a leather strap depends on the material, tanning method and frequency of use. A quality vegetable-tanned alligator strap, properly maintained — avoiding prolonged water exposure and applying occasional leather conditioner — typically lasts between three and five years with daily wear. Calf leather offers slightly less longevity but greater initial flexibility. Casati Milano straps carry an 18-month guarantee against manufacturing defects.

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