Strap for Superocean Heritage II 46 Chronograph Stainless Steel / Black / Black / Croco / Pin

The lug width is 24 millimetres. This is the distance between the spring bars that attach the strap to the case. You can verify this by placing a calliper between the lugs at each end of the case. This measurement is critical for ensuring correct compatibility with any aftermarket strap.

The Superocean Heritage A1331212/BF78/754P/A20BA.1 is extremely versatile. For sartorial elegance, a leather strap in vegetable-tanned Tuscan leather (cognac brown or black) creates striking contrast with the steel case. For sporting character, a NATO strap in canvas or an FKM rubber strap emphasises the diving heritage. Shell cordovan represents the ideal compromise: elegant over time, with a fascinating patina of ageing.

The process is straightforward: obtain a spring bar removal tool. Position the tip into the tiny grooves of the spring bars at each end of the case, press gently inward to compress the internal spring, and the bar will release easily. Reverse the procedure to install the new strap. If you lack confidence, a professional watchmaker will complete the task in minutes.

Absolutely. A quality aftermarket strap with 24mm lug width is perfectly compatible and does not void any warranty. Indeed, it is an opportunity to personalise your instrument according to aesthetic preference and usage context. Artisanal leather or alligator straps offer durability and character that original straps rarely achieve after years of use.

The lifespan of a leather strap depends on frequency of use and environmental conditions. A well-made vegetable-tanned leather strap, used daily but with ordinary care, typically lasts 3–5 years. Shell cordovan tends to last considerably longer, up to 7–10 years, due to the compactness of the fibre. The key is to care for the strap regularly: avoid prolonged water immersion (except for rubber and NATO straps), protect it from direct intense sunlight, and occasionally apply a specific leather balm.