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

The lug width of the Breitling Superocean Heritage A1331212/BF78/439X/A20BA.1 is 24 millimetres. This measurement refers to the internal horizontal distance between the two metal pins protruding from the case at 12 and 6 o'clock. It is essential to verify this before purchasing an aftermarket strap to avoid physical incompatibility.

For the Superocean Heritage A1331212/BF78/439X/A20BA.1, we recommend Mississippian alligator for classical elegance, vegetable-tanned Tuscan leather for developing patina, quality calf for mixed water-and-land situations, or technical rubber for frequent diving use. The choice depends on primary use context and personal sensitivity towards natural leather ageing.

The procedure requires a dedicated spring bar tool to compress the small springs fastening the case lugs. Insert the tool into the lateral spaces of the lug, gently compress the spring, extract the old strap, insert the new one (ensuring it measures 24mm), and release the pressure. If you prefer to avoid the risk of scratches, entrust the task to a specialist watchmaker.

Yes, provided they strictly respect the 24mm measurement. Milano Straps offers vegetable-tanned, alligator and calf leather straps specifically calibrated for this lug width, shipped ready to wear. Always verify the measurement before purchase to avoid returns.

Durability varies according to material and use. Calf leather: 2–3 years with regular maintenance. Vegetable tanning: 3–5 years, as it develops protective patina. Alligator: 5–7 years thanks to naturally more robust structure. Primary wear affects lug attachments and the edge exposed to bending. Store the strap in a dry location and apply it shortly before wearing the watch.