Strap for Top Time B31 Stainless Steel / Blue / Bracelet

The Breitling Top Time AB3113A71C1A1 has a lug width of 20mm. This is the standard measurement to use when selecting a compatible strap, whether in leather, rubber or nylon. To verify independently, measure the internal distance between the two lugs on the caseback side using a digital calliper.

The choice depends on the intended use. For a formal register, an alligator belly-cut strap in black or navy pairs with quiet authority alongside the 38mm steel case. For everyday wear, a vegetable-tanned calf strap develops a distinctive personal patina over time. For a sporting look faithful to the Top Time's racing heritage, a nylon NATO or vulcanised rubber strap are functionally sound choices.

Strap replacement is carried out via the spring bars connecting the strap to the case lugs. Using a spring bar tool, compress the end of the bar, remove the old strap and insert the new one, allowing the spring bar to click back into position. The procedure takes only a few minutes and does not require professional watchmaker tools, though care should be taken to avoid scratching the lug surfaces.

Yes. Any strap with a 20mm attachment is technically compatible with the Breitling Top Time AB3113A71C1A1. Milanostraps.it offers a curated selection of handcrafted straps in various materials — leather, rubber and nylon — both ready to ship and made to order. Casati Milano also provides a bespoke service with personal leather selection in the Milanese atelier.

The lifespan of a leather strap depends on the material, frequency of use and level of care. A high-quality alligator or shell cordovan strap can last between 3 and 7 years with regular use and proper maintenance. Vegetable-tanned calf typically lasts 2 to 4 years. It is important to avoid prolonged water exposure and to apply a leather conditioner occasionally to preserve grain flexibility and delay cracking at the fold points.