Omega Aqua Terra

Most Omega Aqua Terra references take a 20 mm watch strap: 283 of 562. The lug width follows the case size: 34 mm case → 16 mm, 38 mm case → 19 mm, 39 mm case → 20 mm and 42 mm case → 20 mm.

Shop 16 mm Shop 19 mm Shop 20 mm Shop 21 mm

Omega Aqua Terra lug width by case size

562 references measured; 10 more have an integrated bracelet. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
28 mm	14 mm	5	—	220.10.28.60.51.001, 220.10.28.60.53.001, 220.10.28.60.54.001
30 mm	14 mm · 18 mm on 10 · 16 mm on 3	54	—	220.10.30.20.01.001, 220.10.30.20.02.001, 220.10.30.20.03.001
34 mm	16 mm · 20 mm on 32 · 18 mm on 8 · 19 mm on 1	99	—	220.10.34.20.01.001, 220.10.34.20.02.001, 220.10.34.20.02.002
36 mm	20 mm · 19 mm on 1	18	—	2005.75.00, 2009.75.00, 2104.30.00
38 mm	19 mm	74	—	220.10.38.20.01.001, 220.10.38.20.01.004, 220.10.38.20.02.001
39 mm	20 mm · 19 mm on 10 · 18 mm on 9 · 22 mm on 4 · 16 mm on 1 · 21 mm on 1	98	—	2103.30.00, 2103.50.00, 231.10.39.21.01.001
41 mm	20 mm	58	—	220.10.41.21.01.001, 220.10.41.21.01.002, 220.10.41.21.02.001
42 mm	20 mm · 22 mm on 3 · 21 mm on 2 · 18 mm on 1	71	—	2102.30.00, 2102.50.00, 221.10.42.40.01.001
43 mm	21 mm · 20 mm on 15 · 22 mm on 7	57	—	220.10.43.22.03.001, 220.12.43.22.03.001, 220.12.43.22.03.002
44 mm	20 mm · 22 mm on 5	25	—	231.10.44.50.01.001, 231.10.44.50.04.001, 231.10.44.50.06.001
49 mm	20 mm	3	—	231.53.49.10.04.001, 231.53.49.10.04.002, 231.53.49.10.06.001

References that take a different watch strap

231.10.30.61.02.001: 18 mm, not the 14 mm of most 30 mm cases
231.10.30.61.56.001: 18 mm, not the 14 mm of most 30 mm cases
231.15.30.61.55.001: 18 mm, not the 14 mm of most 30 mm cases
231.15.30.61.56.001: 18 mm, not the 14 mm of most 30 mm cases
231.18.30.20.55.001: 18 mm, not the 14 mm of most 30 mm cases
231.20.30.20.06.002: 18 mm, not the 14 mm of most 30 mm cases
231.20.30.20.55.003: 18 mm, not the 14 mm of most 30 mm cases
231.25.30.20.55.003: 18 mm, not the 14 mm of most 30 mm cases
231.25.30.20.55.004: 16 mm, not the 14 mm of most 30 mm cases
231.28.30.20.55.001: 16 mm, not the 14 mm of most 30 mm cases
231.50.30.20.06.002: 18 mm, not the 14 mm of most 30 mm cases
231.55.30.20.55.002: 18 mm, not the 14 mm of most 30 mm cases
231.58.30.20.55.002: 16 mm, not the 14 mm of most 30 mm cases
231.10.34.20.01.001: 20 mm, not the 16 mm of most 34 mm cases
231.10.34.20.04.001: 20 mm, not the 16 mm of most 34 mm cases
231.10.34.20.55.001: 20 mm, not the 16 mm of most 34 mm cases
231.10.34.20.55.002: 20 mm, not the 16 mm of most 34 mm cases
231.10.34.20.55.003: 20 mm, not the 16 mm of most 34 mm cases
231.10.34.20.57.001: 20 mm, not the 16 mm of most 34 mm cases
231.10.34.20.57.002: 20 mm, not the 16 mm of most 34 mm cases
231.10.34.20.57.003: 20 mm, not the 16 mm of most 34 mm cases
231.13.34.20.01.001: 20 mm, not the 16 mm of most 34 mm cases
231.13.34.20.04.001: 20 mm, not the 16 mm of most 34 mm cases
231.13.34.20.55.001: 20 mm, not the 16 mm of most 34 mm cases

And 89 more in the full list below.

Questions about the Omega Aqua Terra

Do all Omega Aqua Terra case sizes take the same watch strap?

No. The lug width changes with the case size: the 34 mm case takes 16 mm, the 38 mm case takes 19 mm, the 39 mm case takes 20 mm, the 41 mm case takes 20 mm and the 42 mm case takes 20 mm. Check your case diameter before you buy.

Can two Omega Aqua Terra watches with a 34 mm case take different watch straps?

Yes. Of the 99 Omega Aqua Terra references with a 34 mm case, 58 take 16 mm, 32 take 20 mm and 8 take 18 mm. The reference number decides, not the case size alone.

Every Omega Aqua Terra reference

Other Omega families

Inside each one the lug width often changes: it is the reference that decides.

All Omega families → · Why the size changes inside a family →