Tudor Black Bay

Most Tudor Black Bay references take a 22 mm watch strap: 68 of 88. The lug width follows the case size: 41 mm case → 22 mm and 43 mm case → 23 mm.

Shop 19 mm Shop 21 mm Shop 22 mm

Tudor Black Bay lug width by case size

88 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
41 mm	22 mm · 21 mm on 5	71	—	7921/001CN, 79220B, 79220B-0001
42 mm	22 mm	2	—	70150, 70150-0001
43 mm	23 mm	11	—	7925/001, 79250BA, 79250BA-0001
not recorded	21 mm · 19 mm on 1 · 23 mm on 1	4	—	Black Bay, M7941A1ACNU-0001

References that take a different watch strap

7941A1A0NU-0002: 21 mm, not the 22 mm of most 41 mm cases
7941A1A0NU-0003: 21 mm, not the 22 mm of most 41 mm cases
7941A1A0RU-0001: 21 mm, not the 22 mm of most 41 mm cases
7941A1A0RU-0002: 21 mm, not the 22 mm of most 41 mm cases
7941A1A0RU-0003: 21 mm, not the 22 mm of most 41 mm cases
36-M79640-0002-2023: 19 mm
M79250BA-0001-2019: 23 mm

Questions about the Tudor Black Bay

Do all Tudor Black Bay case sizes take the same watch strap?

No. The lug width changes with the case size: the 41 mm case takes 22 mm and the 43 mm case takes 23 mm. Check your case diameter before you buy.

Every Tudor Black Bay reference

Other Tudor families

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

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