Breitling · Superocean Heritage '57

Strap for Superocean Heritage '57 Stainless Steel / Red Gold / Black / Mesh

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
ReferenceU10370121B1A1
FamilySuperocean Heritage '57
MovementBreitling caliber 10 hours, minutes, seconds | date | chronometer
Year2020
CaseRed Gold, Stainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Superocean Heritage '57 U10370121B1A1

Selected for the 20 mm lug width

All 20 mm straps →

The Superocean Heritage '57 U10370121B1A1, seen from the bench

The Superocean Heritage '57 U10370121B1A1 is a two-tone stainless steel and 18k red gold watch with a 42mm case diameter and 20mm lug width. It features a Breitling Caliber 10 automatic chronometer-certified movement, a burnt orange dial with stick indices, and a unidirectional black ceramic bezel. The watch combines vintage 1957 design elements with modern specifications, including sapphire crystal with anti-reflective coating and screw-down crown.

Frequently asked questions

What is the lug width of the Breitling Superocean Heritage '57 U10370121B1A1?

The lug width of the Breitling Superocean Heritage '57 U10370121B1A1 is 20mm. This measurement refers to the internal distance between the two case horns at the strap attachment point and determines the correct at-lug width of any compatible strap.

What is the best strap for the Breitling Superocean Heritage '57 U10370121B1A1?

For the Superocean Heritage '57 U10370121B1A1, a vegetable-tanned calf strap in tobacco or cognac tones offers the best balance between elegance and chromatic coherence with the orange dial and red gold case. Square-scale matte alligator is the most formal option, while a technical nylon NATO is preferable for sporting use or humid environments.

How do you change the strap on the Breitling Superocean Heritage '57?

The strap on the Superocean Heritage '57 is removed using standard 20mm springbars. It is advisable to use a fine-tipped springbar tool to avoid scratching the red gold lugs. The model's curved lugs require straps with shaped or pre-curved ends to ensure a flat fit against the wrist without placing undue stress on the leather.

Are there aftermarket straps compatible with the Breitling Superocean Heritage '57 U10370121B1A1?

Yes, any strap with a 20mm at-lug width and either curved or straight ends is compatible, provided the springbars have the correct diameter (standard 1.8mm). Milanostraps.it offers a curated selection of handcrafted 20mm straps in various materials, available bespoke or ready to ship.

How long does a leather strap last on a Breitling Superocean Heritage '57?

Longevity depends on the material and conditions of use. A quality vegetable-tanned calf strap, properly cared for and kept away from moisture, typically lasts 2–4 years. Shell cordovan, owing to its dense fibrous structure, can last 5–8 years whilst developing a distinguished patina. Aquatic or prolonged water exposure calls for vulcanised rubber or technical synthetic straps.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only