Breitling Top Time

Most Breitling Top Time references take a 20 mm watch strap: 36 of 42.

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Breitling Top Time lug width by case size

42 references measured. Updated 2026-11-10.

Case	Lug width	Buckle width	References	Watch strap attachment	For example
38 mm	20 mm · 18 mm on 3	18 mm	9	—	AB3113171L1A1, AB3113171L1X1, AB3113281A1A1
40 mm	20 mm	—	1	—	A41315A71C1X2
41 mm	20 mm	18 mm	24	—	A23310121G1X1, A233101A1A1X1, A233112A1A1X1
42 mm	20 mm · 22 mm on 3	—	8	—	A23311121C1X1, A233111A1C1X1, A253101A1L1X1

References that take a different watch strap

AB01771A1B1X1: 18 mm, not the 20 mm of most 38 mm cases
AB01771A1L1X1: 18 mm, not the 20 mm of most 38 mm cases
AB01772A1G1X1: 18 mm, not the 20 mm of most 38 mm cases
NB21251A1L1X1: 22 mm, not the 20 mm of most 42 mm cases
SB21251A1C1X1: 22 mm, not the 20 mm of most 42 mm cases
SB21252A1Q1X1: 22 mm, not the 20 mm of most 42 mm cases

Questions about the Breitling Top Time

Can two Breitling Top Time watches with a 38 mm case take different watch straps?

Yes. Of the 9 Breitling Top Time references with a 38 mm case, 6 take 20 mm and 3 take 18 mm. The reference number decides, not the case size alone.

What buckle width does the Breitling Top Time 41 mm take?

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

Every Breitling Top Time 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 →