Omega
Seamaster Planet Ocean 600M Big Size 45.5mm
Ref. 2900.50.91
2005–2011 · 45.5mm · caliber Omega Cal. 2500: automatic, 3.5Hz, 48h PR; Co-Axial escapement, chronometer-certified
Live pricing is coming soon. Get notified when it is available for this reference.
In-house manufacture caliber
Large case: suits wrists 7 in+ (18 cm+)
45.5 mm case. 22 mm lug width. A bold, statement-size wear. Best suited to larger wrists where the case sits flush.
Not yet rated
Community + OSINT signals haven’t landed for this reference yet. We don’t publish a rating against zero signal: the number would mean nothing. Editorial body + caliber + market value still surface above; ratings appear once the signal corpus does.
Search pre-owned listings
You might also like
Buying guidance
Sources for this entry: omegawatches.com · monochrome-watches.com
Pre-purchase sheet → The numbers to check, what to look at and what to ask, on one printable page.





