Breitling Endurance Pro

Most Breitling Endurance Pro references take a 22 mm watch strap: 75 of 80. The lug width follows the case size: 38 mm case → 18 mm and 44 mm case → 22 mm.

Shop 18 mm Shop 22 mm

Breitling Endurance Pro lug width by case size

80 references measured. Updated 2026-11-03.

Case	Lug width	Buckle width	References	Watch strap attachment	For example
38 mm	18 mm · 22 mm on 2	16 mm	7	—	X83310281B1S1, X83310A71B1S1, X83310D41B1S1
44 mm	22 mm	18 mm	73	—	E823101A1I1S1, E823102A1I1S1, E823103A1M1S1

References that take a different watch strap

X833101A1A1S1: 22 mm, not the 18 mm of most 38 mm cases
X833105A1B1S1: 22 mm, not the 18 mm of most 38 mm cases

Questions about the Breitling Endurance Pro

Do all Breitling Endurance Pro 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 44 mm case takes 22 mm. Check your case diameter before you buy.

What buckle width does the Breitling Endurance Pro 44 mm take?

18 mm. The watch strap is 22 mm at the case and narrows to 18 mm at the buckle.

Every Breitling Endurance Pro 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 →