Strap for Superocean Heritage '57 Stainless Steel / Calf / Pin

The Breitling Superocean Heritage '57 A10370121B1X1 takes a 20 mm strap. This measurement should be taken with a digital calliper on the inner side of the lugs, directly against the case, to ensure a precise fit without lateral play.

The most suitable materials for the Superocean Heritage '57 are matte alligator leather for formal occasions, vegetable-tanned calf for daily wear, and vulcanised rubber for sporting use. The choice depends on context: each material interacts differently with the dial's aesthetic and the watch's technical character.

To replace the strap, you will need a 20 mm spring bar and a fine-tipped or flat spring bar tool. Insert the tool into the lug slot, compress the spring bar, and slide the strap free. The operation takes approximately two minutes per side and requires no intervention on the case or movement.

Yes, any strap with a 20 mm attachment and standard 1.8 mm diameter spring bars is physically compatible. For the best aesthetic result, straps with a keeper end no thicker than 4 mm are recommended, to maintain harmony with the watch's short lug geometry. A dedicated selection of compatible 20 mm straps is available on milanostraps.it.

Longevity depends on the material and frequency of use. A vegetable-tanned calfskin strap worn daily typically lasts 18 to 30 months; shell cordovan can exceed 36 months owing to its dense fibre structure. Prolonged exposure to salt water or perspiration accelerates wear: for intensive sporting use, rubber remains the most durable option.