Breitling
Top Time AB01771A1B1X1— lug 18mm

The Breitling Top Time AB01771A1B1X1 has a lug width of 18mm. This measurement is taken with a digital calliper positioned between the two lower lugs of the case, at the level of the springbar hole. It is the correct dimension for any aftermarket or bespoke replacement strap.

For formal occasions, a vegetable-tanned alligator strap with a deployant clasp complements the polished steel of the 38mm case. For daily or sporting use, a pebbled calf leather or vulcanised rubber strap offers comfort and durability. A technical nylon NATO strap is the most historically coherent choice, reflecting the original aviator heritage of the model.

To replace the strap, the springbars housed in the case lugs must be removed. Use a dedicated spring bar tool or a fine-tipped screwdriver to compress and release each bar from its slot. It is advisable to work on a soft cushion to avoid scratching the case. Alternatively, any watchmaker or specialist atelier can complete the swap in a matter of minutes.

Yes. Any strap with an 18mm lug width is technically compatible. Milanostraps.it offers a curated selection of aftermarket straps in various leathers and materials, complete with springbars. For a tailored result, the Casati Milano atelier produces bespoke straps with direct leather selection and personalised finishing.

Longevity depends on the material and frequency of use. A vegetable-tanned calf strap worn daily typically lasts 18 to 24 months before the patina affects structural integrity. Properly maintained alligator leather can exceed three to four years. To extend strap life, avoid prolonged contact with water and perspiration, and rotate between two or more straps throughout the week.