Strap for Superocean 42

The Breitling Superocean A1736402BA30138S has a lug width of 20mm. This measurement is taken internally between the two lugs, flush against the case back, using a digital calliper or a millimetre ruler. It is a standard size that ensures broad compatibility with aftermarket straps.

The ideal choice depends on intended use. A vulcanised rubber strap is the most functional option for sport and marine environments. Vegetable-tanned calfskin offers the best all-round versatility for daily wear. For formal occasions, a matte alligator strap elevates the aesthetic register without undermining the watch's technical character. A deployant clasp in steel is recommended for those seeking a secure and comfortable fastening.

Strap replacement requires a double-pronged spring bar tool. Insert the fine tip into the lug hole, compress the spring bar and slide the strap free. Take care not to scratch the steel lugs — protect the case with a soft cloth during the operation. Reassembly follows the reverse procedure; always verify that the spring bars are correctly seated in both lug holes before wearing the watch.

Yes. The standard 20mm lug width ensures full compatibility with all quality aftermarket straps in that size. Milano Straps offers a curated selection of handcrafted straps in leather, alligator, calfskin and technical materials, all dimensioned for 20mm lugs, with customisation options for length, buckle and stitching.

The lifespan of a leather strap depends on the quality of the hide, the tanning process and conditions of use. A high-quality vegetable-tanned calfskin strap worn daily without prolonged water exposure typically lasts between 18 and 36 months. Alligator, owing to its denser fibrous structure, tends to last longer but is less suited to intensive sporting use. Casati Milano provides an 18-month guarantee against manufacturing defects.