Breitling Superocean Heritage '57 A10370121B1A1

The Breitling Superocean Heritage '57 A10370121B1A1 takes a 20 mm watch band.

Breitling · Superocean Heritage '57

20mm

lug width

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Every watch that takes 20 mm →

Lug width: 20 mm
Case diameter: 42 mm
Reference: A10370121B1A1
Family: Superocean Heritage '57
Case material: Acciaio
Water resistance: 100 m
Model: Superocean Heritage '57 Stainless Steel / Black / Mesh
Year: 2020

Bands that fit

Cut and stitched in Milano, in the width this watch takes.

Hammered Black Calfskin Strap — Ecru Stitching€98

Brown Italian Leather Strap€80

Vintage Gray Calfskin Strap€80

Black Saffiano Strap Ecru Stitching€90

Vintage Brown Calfskin Strap — Natural Patina€98

Swift Topo Leather Strap€120

See every 20 mm band →

Will a strap close on your wrist?

Set for this watch: 42 mm of case and 20 mm between the lugs. Add your wrist and see where a standard strap would close.

Your wrist

Watch length, lug to lug

Filled in with the case diameter, which is what we hold for this reference. Measure the watch tip to tip for the exact answer: it is usually a few mm more.

Enter your wrist measurement to see whether a standard 75/115 mm strap closes on you, and where.

Why ready-made straps come in one length →

Sizing notes

20 mm is the gap between the lugs, so a 20 mm band goes in without adapters. Whether it sits flush against a 42 mm case depends on how that case is shaped.
Inside the Superocean Heritage '57 family the lug width is not one number: it runs 18, 20 mm. This reference is the 20 mm one, so a band bought for another Superocean Heritage '57 may not fit it. Why the size changes inside a family →
20 mm is one of the common sizes: 15,081 of the 41,485 watches measured take it, which is why it is the width most bands are cut in. Every watch that takes 20 mm →