Frederique Constant Manufacture

Most Frederique Constant Manufacture references take a 20 mm watch strap: 40 of 45.

Frederique Constant Manufacture lug width by case size

45 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
39 mm	20 mm	3	—	FC-980GR3H6, FC-980MPBL3H8, FC-980S3H6
40 mm	20 mm	15	—	FC-706B3H6, FC-706S3H6, FC-706SAL3H6
42 mm	20 mm · 22 mm on 4 · 21 mm on 1	24	—	FC-712MN4H6, FC-712MS4H4, FC-712MS4H6
not recorded	20 mm	3	—	716GR3H6, 719BLW3H6, 776SAL3H6

References that take a different watch strap

FC-718LA4H6: 22 mm, not the 20 mm of most 42 mm cases
FC-718NWM4H6: 22 mm, not the 20 mm of most 42 mm cases
FC-775PS4S6: 21 mm, not the 20 mm of most 42 mm cases
FC-945MC4H6: 22 mm, not the 20 mm of most 42 mm cases
FC718WM4H6: 22 mm, not the 20 mm of most 42 mm cases

Questions about the Frederique Constant Manufacture

Can two Frederique Constant Manufacture watches with a 42 mm case take different watch straps?

Yes. Of the 24 Frederique Constant Manufacture references with a 42 mm case, 19 take 20 mm, 4 take 22 mm and 1 take 21 mm. The reference number decides, not the case size alone.