Glashütte Original Senator

Most Glashütte Original Senator references take a 21 mm watch strap: 171 of 299. The lug width follows the case size: 40 mm case → 20 mm, 42 mm case → 21 mm and 44 mm case → 21 mm.

Shop 18 mm Shop 20 mm Shop 21 mm

Glashütte Original Senator lug width by case size

299 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
40 mm	20 mm · 21 mm on 21 · 18 mm on 8 · 19 mm on 1	93	—	1-36-01-01-02-01, 1-36-01-01-02-30, 1-36-01-01-02-34
42 mm	21 mm · 20 mm on 37 · 18 mm on 15	157	—	1-36-02-01-02-01, 1-36-02-01-02-30, 1-36-02-01-02-50
44 mm	21 mm · 20 mm on 2	47	—	1-00-14-05-02-05, 1-00-14-05-02-07, 1-00-14-05-02-55
48 mm	20 mm	1	—	1-89-01-03-03-04
not recorded	20 mm	1	—	39-32-13-17-04

References that take a different watch strap

1-36-03-01-02-01: 18 mm, not the 20 mm of most 40 mm cases
1-36-03-01-02-30: 18 mm, not the 20 mm of most 40 mm cases
1-36-03-01-02-34: 18 mm, not the 20 mm of most 40 mm cases
1-36-03-01-02-50: 18 mm, not the 20 mm of most 40 mm cases
1-36-04-01-02-34: 21 mm, not the 20 mm of most 40 mm cases
1-36-04-01-02-36: 21 mm, not the 20 mm of most 40 mm cases
1-36-04-01-02-64: 21 mm, not the 20 mm of most 40 mm cases
1-36-04-01-02-66: 21 mm, not the 20 mm of most 40 mm cases
1-36-04-01-02-71: 21 mm, not the 20 mm of most 40 mm cases
1-36-04-04-02-30: 21 mm, not the 20 mm of most 40 mm cases
1-36-04-04-02-50: 21 mm, not the 20 mm of most 40 mm cases
1-36-04-04-02-70: 21 mm, not the 20 mm of most 40 mm cases
1-36-04-05-02-70: 21 mm, not the 20 mm of most 40 mm cases
1-36-24-02-02-01: 21 mm, not the 20 mm of most 40 mm cases
1-36-24-02-02-61: 21 mm, not the 20 mm of most 40 mm cases
1-36-24-02-02-71: 21 mm, not the 20 mm of most 40 mm cases
1-36-24-02-05-02: 21 mm, not the 20 mm of most 40 mm cases
1-36-24-04-02-01: 21 mm, not the 20 mm of most 40 mm cases
1-36-24-04-02-61: 21 mm, not the 20 mm of most 40 mm cases
1-36-24-04-02-64: 21 mm, not the 20 mm of most 40 mm cases
1-36-24-04-02-71: 21 mm, not the 20 mm of most 40 mm cases
1-36-24-05-02-01: 21 mm, not the 20 mm of most 40 mm cases
1-36-24-05-02-61: 21 mm, not the 20 mm of most 40 mm cases
1-36-24-05-02-64: 21 mm, not the 20 mm of most 40 mm cases

And 60 more in the full list below.

Questions about the Glashütte Original Senator

Do all Glashütte Original Senator case sizes take the same watch strap?

No. The lug width changes with the case size: the 40 mm case takes 20 mm, the 42 mm case takes 21 mm and the 44 mm case takes 21 mm. Check your case diameter before you buy.

Can two Glashütte Original Senator watches with a 42 mm case take different watch straps?

Yes. Of the 157 Glashütte Original Senator references with a 42 mm case, 105 take 21 mm, 37 take 20 mm and 15 take 18 mm. The reference number decides, not the case size alone.