Strap for Superocean Chronograph 42 Stainless Steel / Blue / Rubber / Folding

The lug width of the Breitling Superocean A13311D1/C971/203S/A18D.2 is 20mm. This measurement is taken by inserting a vernier calliper between the two lugs at the strap attachment point. An accurate measurement is essential before purchasing any aftermarket strap, ensuring correct fitment with both the lugs and the buckle or deployant clasp.

The ideal choice depends on the intended context. For formal or business wear, a hand-stitched alligator strap with a polished or brushed steel deployant clasp at 20mm offers the most refined result. For daily or sport use, vulcanised rubber maintains thematic coherence with the watch's diving heritage. A technical nylon NATO is the most versatile option for everyday rotation, combining moisture resistance with ease of substitution.

Strap replacement requires a spring bar tool — a dual-tipped instrument used to compress the spring bars fitted within the lugs. Care must be taken to avoid scratching the steel lug surfaces. If you are not experienced with this procedure, it is advisable to entrust the operation to a watchmaker or a specialist atelier such as Casati Milano, where strap changes are performed with full attention to case integrity.

Yes. Since the 20mm lug width is a widely adopted standard in high-end watchmaking, the aftermarket offers an extensive range of compatible straps in leather, rubber, nylon and metal. Milano Straps provides a curated selection of 20mm straps in premium materials, handcrafted to complement the Superocean Heritage's stainless steel case without compromise on build quality.

Longevity depends on the leather type, tanning method and conditions of use. A quality alligator or shell cordovan strap worn regularly in dry conditions can last between three and six years, developing a distinctive personal patina over time. Vegetable-tanned leather tends to improve with age when properly maintained. For aquatic use, rubber or NATO straps are strongly recommended. Casati Milano backs all atelier-made straps with an 18-month warranty covering manufacturing defects.