Frederique Constant Classics

Most Frederique Constant Classics references take a 15 mm watch strap: 14 of 42. The lug width follows the case size: 28 mm case → 14 mm, 30 mm case → 15 mm, 36 mm case → 18 mm and 40 mm case → 22 mm.

Shop 16 mm Shop 18 mm Shop 20 mm Shop 22 mm

Frederique Constant Classics lug width by case size

42 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
28 mm	14 mm	6	—	FC-200MPW2AC2B, FC-200MPW2AC2D6, FC-200MPW2AC3B
30 mm	15 mm · 14 mm on 1	14	—	FC-200LB1C6, FC-200LBMC26B, FC-200MC26
34 mm	16 mm	2	—	FC-206MPLB2S6B, FC-206MPSAL2S4
36 mm	18 mm	8	—	FC-200PI2C6B, FC-303HLBN3B6, FC-313AVD3BD6B
38 mm	20 mm	3	—	FC-303MC3P5, FC-303MC3P6, FC-303MC3P6B
40 mm	22 mm · 20 mm on 1	4	—	FC-303MC4P6, FC-303MC4P6B2, FC-303WN5B3B
not recorded	22 mm · 15 mm on 1 · 18 mm on 1 · 20 mm on 1	5	—	270M4P6, 335MC4P5

References that take a different watch strap

FC-200MPW2V2B: 14 mm, not the 15 mm of most 30 mm cases
FC-330MC4P6: 20 mm, not the 22 mm of most 40 mm cases
200MC14: 15 mm
301BL3B6B: 20 mm
331MPWGRD3BD6: 18 mm

Questions about the Frederique Constant Classics

Do all Frederique Constant Classics case sizes take the same watch strap?

No. The lug width changes with the case size: the 28 mm case takes 14 mm, the 30 mm case takes 15 mm and the 36 mm case takes 18 mm. Check your case diameter before you buy.