Constructed entirely in brushed titanium, the PloProf 1200m wears its heritage proudly in a cushion-shaped case that spans 50mm × 48mm — expanding to 55mm when the crown-guard is open — and stands 16.60mm thick. A scratch-resistant sapphire crystal protects the white dial, while a bi-directional rotating bezel and screw-in crown reinforce the watch's serious diving credentials.
Inside, a COSC-certified automatic chronometer movement powers the watch with precision meeting the rigorous standards of the Contrôle Officiel Suisse des Chronomètres. The transparent case back allows a direct view of the movement within. The titanium bracelet closes with a push-button folding clasp, matching the case material in both finish and construction.
Reference 227.90.55.21.04.001 brings together a bold tool-watch silhouette and depth-rated engineering in a lightweight titanium package — a combination that defines the PloProf lineage within Omega's Seamaster collection.
