Sinn Instrument Watches

Most Sinn Instrument Watches references take a 20 mm watch strap: 16 of 32. The lug width follows the case size: 39 mm case → 20 mm, 40 mm case → 20 mm, 41 mm case → 20 mm and 43 mm case → 22 mm.

Shop 20 mm Shop 22 mm Shop 24 mm

Sinn Instrument Watches lug width by case size

32 references measured. Updated 2026-10-30.

Case	Lug width	References	Watch strap attachment	For example
39 mm	20 mm	7	—	556.010, 556.0101, 556.0102
40 mm	20 mm	5	—	856.010, 856.011, 856.012
41 mm	20 mm	4	—	104.010, 104.011, 104.012
43 mm	22 mm	12	—	240.011, 240.021, 836.010
44 mm	22 mm	3	—	112.010, 240.010, 949.010
47 mm	24 mm	1	—	212.050

Questions about the Sinn Instrument Watches

Do all Sinn Instrument Watches case sizes take the same watch strap?

No. The lug width changes with the case size: the 39 mm case takes 20 mm, the 40 mm case takes 20 mm and the 43 mm case takes 22 mm. Check your case diameter before you buy.