Strap for Superocean II 42 Stainless Steel / Black / Japan Special Edition

The lug width of the Breitling Superocean A17365C9/BF71/161A is 20mm. This measurement is taken with a digital calliper positioned between the two lower lugs of the case, at the point where the spring bars are inserted. 20mm is one of the most common standards in the industry, ensuring full compatibility with a wide range of aftermarket straps without the need for adapters.

The ideal choice depends on the intended use. For aquatic or sporting activities, a vulcanised rubber strap in black or navy blue offers resistance to salt water and immediate comfort. For formal or business settings, a black or midnight blue alligator strap with contrast stitching complements the satin-finished steel case. Vegetable-tanned calf leather provides a versatile everyday option that develops a distinctive patina over time. For maximum convenience, a NATO nylon strap allows tool-free quick changes.

To replace the strap, the spring bars connecting it to the case must be removed. Use a dedicated flat-tipped or fork-ended spring bar tool, inserting it into the lateral groove of the lug to compress the spring bar. The process takes approximately two minutes for an experienced hand. It is advisable to work on a soft surface to avoid scratching the case. The Superocean's spring bars are straight rather than curved, so standard flat-ended straps are fully compatible.

Yes. Any aftermarket strap with a 20mm lug width and straight spring bars is fully compatible with the Breitling Superocean A17365C9/BF71/161A. MilanoStraps.it offers a curated selection of handcrafted straps in various materials — alligator, calf leather, shell cordovan, NATO and rubber — all produced at 20mm lug width. For a bespoke piece with in-atelier leather selection, Casati Milano offers a made-to-measure service by appointment.

The lifespan of a leather strap depends on the quality of the tanning process, daily usage and maintenance. A high-quality calf or alligator strap under regular but not intensive use will retain structural and aesthetic integrity for 2 to 4 years. Vegetable-tanned leather tends to age more gracefully, developing a characteristic patina, whilst rapidly tanned leathers show wear earlier. Prolonged exposure to salt water, heavy perspiration and direct heat should be avoided, and the leather should be conditioned periodically with appropriate products.