The Omega Seamaster Diver 300M ref. 2598.80.00 belongs to the late-1990s generation that helped define Omega’s modern dive-watch identity. Featuring a 42 mm stainless-steel case, blue wave-pattern dial, and skeleton hands, it is powered by the automatic calibre 1120 — a proven, thin, and reliable movement used widely during this era. This reference sits firmly in the period where Omega balanced professional dive capability with refined, everyday wearability, making it both functional and approachable.

This reference is part of the pre-Co-Axial Seamaster era, meaning it retains a more traditional mechanical architecture while offering excellent durability. The wave dial and scalloped bezel became visual signatures of the Seamaster line, immediately recognizable yet restrained. Compared to later ceramic models, the aluminium bezel and slimmer case profile give it a lighter, more vintage-leaning feel on the wrist.

Model – Seamaster Diver 300m
Reference – 25988000
Year –
Size – 42mm
Dial – Blue
Case Material – Steel
Bracelet Material – Steel
Movement – Automatic
Power Reserve – 44hrs
Water resistance – 300m
Condition – 8/10
Accs – Watch Only

Remarks – A clean example of Omega’s late-1990s Seamaster design language, combining practical dive functionality with everyday wearability. Subtle, balanced, and well-preserved, this piece suits collectors who value design continuity over modern excess.