Omega Seamaster Diver 300M

Most Omega Seamaster Diver 300M references take a 20 mm watch strap: 222 of 252. The lug width follows the case size: 36 mm case → 20 mm, 41 mm case → 20 mm, 42 mm case → 20 mm and 44 mm case → 21 mm.

Shop 18 mm Shop 20 mm Shop 21 mm

Omega Seamaster Diver 300M lug width by case size

252 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
35 mm	18 mm · 20 mm on 1	2	—	2551.80.00
36 mm	20 mm · 18 mm on 9 · 22 mm on 1	48	—	2052.50.00, 2053.80.00, 2062.50.00
39 mm	20 mm	1	—	2332.20.00
41 mm	20 mm	83	—	2031.50.00, 2054.50.00, 2055.80.00
42 mm	20 mm	83	—	210.20.42.20.01.001, 210.20.42.20.01.002, 210.20.42.20.03.001
44 mm	21 mm · 20 mm on 16 · 22 mm on 1	35	—	210.20.44.51.01.001, 210.20.44.51.03.001, 210.22.44.51.01.001

References that take a different watch strap

2552.20.00: 20 mm, not the 18 mm of most 35 mm cases
212.30.36.20.01.002: 18 mm, not the 20 mm of most 36 mm cases
212.30.36.20.51.001: 18 mm, not the 20 mm of most 36 mm cases
212.30.36.61.01.001: 18 mm, not the 20 mm of most 36 mm cases
2223.80.00: 18 mm, not the 20 mm of most 36 mm cases
2250.50.00: 18 mm, not the 20 mm of most 36 mm cases
2252.50.00: 18 mm, not the 20 mm of most 36 mm cases
2260.50.00: 18 mm, not the 20 mm of most 36 mm cases
2552.61.00: 18 mm, not the 20 mm of most 36 mm cases
2552.80.00: 18 mm, not the 20 mm of most 36 mm cases
2554.80.00: 22 mm, not the 20 mm of most 36 mm cases
212.30.44.50.01.002: 20 mm, not the 21 mm of most 44 mm cases
212.30.44.52.01.001: 20 mm, not the 21 mm of most 44 mm cases
212.32.44.50.01.001: 20 mm, not the 21 mm of most 44 mm cases
212.92.44.50.99.001: 20 mm, not the 21 mm of most 44 mm cases
2269.50.00: 20 mm, not the 21 mm of most 44 mm cases
2269.52.00: 20 mm, not the 21 mm of most 44 mm cases
2541.80.00: 20 mm, not the 21 mm of most 44 mm cases
2569.50.00: 20 mm, not the 21 mm of most 44 mm cases
2569.52.00: 20 mm, not the 21 mm of most 44 mm cases
2595.30.00: 20 mm, not the 21 mm of most 44 mm cases
2595.50.00: 20 mm, not the 21 mm of most 44 mm cases
2869.50.91: 20 mm, not the 21 mm of most 44 mm cases
2869.52.91: 20 mm, not the 21 mm of most 44 mm cases

And 4 more in the full list below.

Questions about the Omega Seamaster Diver 300M

Do all Omega Seamaster Diver 300M case sizes take the same watch strap?

No. The lug width changes with the case size: the 36 mm case takes 20 mm, the 41 mm case takes 20 mm, the 42 mm case takes 20 mm and the 44 mm case takes 21 mm. Check your case diameter before you buy.

Can two Omega Seamaster Diver 300M watches with a 36 mm case take different watch straps?

Yes. Of the 48 Omega Seamaster Diver 300M references with a 36 mm case, 38 take 20 mm, 9 take 18 mm and 1 take 22 mm. The reference number decides, not the case size alone.