Strap for Superocean Heritage '57 Stainless Steel / Red Gold / Outerknown

The lug width of the Breitling Superocean Heritage '57 U103701A1Q1W1 is 20mm. This is the standard measurement to use when selecting any compatible aftermarket strap, measured internally between the two lugs at the point of contact with the strap.

Given the bi-material case in red gold and stainless steel, a vegetable-tanned alligator strap is the most coherent choice to complement the precious metal component. For sportier use, a nabuk calf leather or a 20mm nylon NATO strap restores the model's original diving identity. A deployant clasp in steel or red gold optimises comfort and wrist fit.

To replace the strap, a fine-tipped spring bar tool is required. Insert the tip into the dedicated slot between the lug and the spring bar, compress the bar and slide the strap free. The operation takes approximately two minutes per side. It is advisable to rest the watch on a soft cloth to protect the red gold case during the procedure.

Yes. Any strap measuring 20mm at the lug is technically compatible. Milano Straps offers a curated selection of handcrafted 20mm straps in alligator, calf leather, shell cordovan and NATO, available bespoke or ready to ship online, all compatible with the standard spring bars of the Superocean Heritage '57.

Longevity depends on leather type and frequency of use. A vegetable-tanned alligator strap, with periodic conditioning cream application, retains its aesthetic integrity and structural strength for 3 to 5 years of regular wear. Prolonged exposure to salt water or perspiration accelerates deterioration: for intensive use, a rubber or nylon NATO strap is recommended.