Omega
Omega Seamaster Diver 300M Strap Size — 20mm Lug Width
The Omega Seamaster Diver 300M has a 20mm lug width, so it takes a 20mm watch strap.
Lug width20mm
| Lug width | 20 mm |
|---|---|
| Case diameter | 42 mm |
| Lug-to-lug | 49 mm |
| Thickness | 13.5 mm |
| Spring bar Ø | 2.0 mm |
| End type | Fitted ends best |
Strap styles that fit
- NATO / ZuluSingle-pass — always fits 20mm.
- PerlonWoven pass-through, 20mm.
- 2-piece leatherStraight ends fit; curved ends for a gapless look.
- Rubber / siliconeDivers & sports fit well.
- Milanese / meshSlides to 20mm.
- Metal braceletNeeds 20mm model-specific end-links.
Get the right strap
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Omega Seamaster Diver 300M — strap questions
What size strap does the Seamaster Diver 300M take?
The Omega Seamaster Diver 300M has a 20mm lug width, so you need a 20mm watch strap.
Will any 20mm strap fit the Seamaster Diver 300M?
Yes for straight-lug styles (NATO, leather, rubber). For a gapless look, pick curved/fitted ends. A metal bracelet needs 20mm end-links made for this model.
What spring bar size does the Seamaster Diver 300M use?
Roughly 2.0mm diameter.
Is the Seamaster Diver 300M good for strap swapping?
Very — with standard 20mm lugs you can switch between NATO, leather, rubber and mesh straps in seconds with a spring-bar tool.