Strap for Chronomat 44 Stainless Steel / MOP / Japan Special Edition

The lug width of the Breitling Chronomat B01 44 AB01152A/A813/388A is 22mm. This measurement corresponds to the internal distance between the case lugs at the strap attachment point and is a fixed structural dimension of this reference, dictated by the proportions of the 44mm case.

The ideal choice depends on intended use and personal style. For daily and sporting wear, a vegetable-tanned calf leather strap or vulcanised rubber offers the best functionality. For formal occasions, smooth alligator or shell cordovan complement the steel case superbly. A nylon NATO strap remains the most historically consistent choice given the Chronomat's aeronautical origins.

The strap on the Chronomat B01 44 is secured by standard 22mm spring bars. To remove it, use a spring bar tool or a thin flat-head screwdriver to compress and release the bars. Work on a soft surface to protect the case finishing. No specialist watchmaking tools or professional intervention are required for this operation.

Yes. Any strap with a 22mm attachment width and standard spring bars is technically compatible. Milano Straps offers a curated selection of handcrafted straps in 22mm lug width, with full customisation options covering leather type, colour, stitching and buckle. It is advisable to check the lug end curvature, as the Chronomat's lugs may benefit from a slightly curved strap end for a flush fit.

Longevity depends on leather quality, frequency of use and maintenance. A quality vegetable-tanned calf leather strap used daily can be expected to last between 18 and 36 months. Perspiration is the primary degrading agent; rotating between straps and avoiding prolonged exposure to moisture will extend service life considerably. Alligator and shell cordovan straps, owing to the density of their fibres, typically outlast standard calf leather with equivalent care.