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

The lug width of the Breitling Superocean Heritage A1331212/BF78/755P/A20D.1 is 24mm. This measurement is taken with a calliper across the internal distance between the two lugs at the strap attachment point, and should not be confused with the 46mm case diameter.

For the Superocean Heritage 46mm, the most suitable materials are vegetable-tanned alligator leather for an elegant pairing that develops a natural patina over time, grained calf leather for everyday wear, nylon NATO straps to echo the original tool watch aesthetic, and vulcanised rubber for marine or sporting use. The strap head must measure 24mm to fit correctly into the lugs.

To replace the strap on the Superocean Heritage, a spring bar tool — either lever or push-pin type — is required, inserted into the spring bar hole. The spring bars on the 46mm model are standard diameter; it is advisable to replace them at the same time as the strap if they show signs of wear. The operation takes approximately three minutes for anyone familiar with basic watchmaking tools.

Yes, numerous artisan manufacturers produce aftermarket straps compatible with a 24mm lug width. Milano Straps offers a selection of leather, NATO and technical material straps with a 24mm head, tapered to 20 or 22mm towards the buckle, designed to suit the proportions of the Superocean Heritage's 46mm case.

A quality leather strap worn on a dive watch such as the Superocean Heritage has a variable lifespan depending on water exposure. Regular use in marine environments or swimming pools accelerates degradation of the leather fibres. For intensive aquatic use, rubber is preferable; for dry everyday wear, an alligator or calf leather strap in vegetable tannage can last between three and seven years if maintained correctly with a natural wax-based conditioner.