Reference 227.90.55.21.01.001 pairs a brushed titanium case with a matching brushed titanium bracelet, giving this substantial instrument a cohesive and lightweight character. The cushion-shaped case measures 50mm × 48mm and sits 16.60mm thick, expanding to 55mm in width when the crown-guard is opened. A scratch-resistant sapphire crystal protects the black dial, while a transparent case back allows a view of the movement within.
Diving credentials are formidable: water resistance reaches 1200m/4000ft, backed by a screw-in crown, a bi-directional rotating bezel, and a push-button folding clasp on the titanium bracelet. Inside beats an automatic chronometer movement that carries COSC certification, confirming its precision meets the standards of the Swiss Official Chronometer Testing Institute.
This example is presented in new/unworn condition, making it an outstanding opportunity to acquire one of Omega's most technically demanding dive references straight from the Seamaster collection.
