Omega Seamaster Planet Ocean

Most Omega Seamaster Planet Ocean references take a 22 mm watch strap: 108 of 242. The lug width follows the case size: 38 mm case → 18 mm, 42 mm case → 20 mm, 44 mm case → 21 mm and 46 mm case → 22 mm.

Shop 18 mm Shop 19 mm Shop 20 mm Shop 21 mm Shop 22 mm

Omega Seamaster Planet Ocean lug width by case size

242 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
38 mm	18 mm · 20 mm on 12	25	—	215.18.40.20.01.001, 232.15.38.20.01.001, 232.18.38.20.01.001
40 mm	19 mm	15	—	215.15.40.20.01.001, 215.23.40.20.04.001, 215.30.40.20.01.001
42 mm	20 mm	52	—	2201.50.00, 2201.51.00, 2201.52.00
44 mm	21 mm · 22 mm on 1	37	—	215.30.44.21.01.001, 215.30.44.21.01.002, 215.30.44.21.01.003
46 mm	22 mm · 20 mm on 6	112	—	215.20.46.51.03.001, 215.23.46.51.03.001, 215.30.46.21.03.001
52 mm	22 mm	1	—	215.92.52.21.99.001

References that take a different watch strap

222.18.38.50.01.001: 20 mm, not the 18 mm of most 38 mm cases
222.28.38.50.04.001: 20 mm, not the 18 mm of most 38 mm cases
222.30.38.50.01.001: 20 mm, not the 18 mm of most 38 mm cases
222.30.38.50.01.002: 20 mm, not the 18 mm of most 38 mm cases
222.30.38.50.01.003: 20 mm, not the 18 mm of most 38 mm cases
222.32.38.50.01.001: 20 mm, not the 18 mm of most 38 mm cases
222.32.38.50.01.003: 20 mm, not the 18 mm of most 38 mm cases
232.15.38.20.04.001: 20 mm, not the 18 mm of most 38 mm cases
232.18.38.20.04.001: 20 mm, not the 18 mm of most 38 mm cases
232.30.38.20.01.001: 20 mm, not the 18 mm of most 38 mm cases
232.63.38.20.01.001: 20 mm, not the 18 mm of most 38 mm cases
232.63.38.20.04.001: 20 mm, not the 18 mm of most 38 mm cases
215.58.44.21.07.001: 22 mm, not the 21 mm of most 44 mm cases
2210.50.00: 20 mm, not the 22 mm of most 46 mm cases
222.32.46.50.01.001: 20 mm, not the 22 mm of most 46 mm cases
222.62.46.20.01.001: 20 mm, not the 22 mm of most 46 mm cases
222.62.46.50.01.001: 20 mm, not the 22 mm of most 46 mm cases
232.30.46.51.01.001: 20 mm, not the 22 mm of most 46 mm cases
2910.50.81: 20 mm, not the 22 mm of most 46 mm cases

Questions about the Omega Seamaster Planet Ocean

Do all Omega Seamaster Planet Ocean case sizes take the same watch strap?

No. The lug width changes with the case size: the 38 mm case takes 18 mm, the 40 mm case takes 19 mm, the 42 mm case takes 20 mm, the 44 mm case takes 21 mm and the 46 mm case takes 22 mm. Check your case diameter before you buy.

Can two Omega Seamaster Planet Ocean watches with a 38 mm case take different watch straps?

Yes. Of the 25 Omega Seamaster Planet Ocean references with a 38 mm case, 13 take 18 mm and 12 take 20 mm. The reference number decides, not the case size alone.