Breitling Superocean Heritage '57

Most Breitling Superocean Heritage '57 references take a 20 mm watch strap: 17 of 26. The lug width follows the case size: 38 mm case → 18 mm and 42 mm case → 20 mm.

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Breitling Superocean Heritage '57 lug width by case size

26 references measured. Updated 2026-11-10.

Case	Lug width	Buckle width	References	Watch strap attachment	For example
38 mm	18 mm	16 mm	9	—	A10340161C1X1, A10340361L1X1, A10340A11A1X1
42 mm	20 mm	18 mm	17	—	A10370121B1A1, A10370121B1X1, A10370121B1X2

Questions about the Breitling Superocean Heritage '57

Do all Breitling Superocean Heritage '57 case sizes take the same watch strap?

No. The lug width changes with the case size: the 38 mm case takes 18 mm and the 42 mm case takes 20 mm. Check your case diameter before you buy.

What buckle width does the Breitling Superocean Heritage '57 42 mm take?

18 mm. The watch strap is 20 mm at the case and narrows to 18 mm at the buckle.

Every Breitling Superocean Heritage '57 reference

Other Breitling families

Inside each one the lug width often changes: it is the reference that decides.

All Breitling families → · Why the size changes inside a family →