Reference 331.53.42.51.02.002 sits at the intersection of Omega's racing heritage and precious-metal watchmaking. The 41.5mm round case, 16.5mm thick and crafted in 18kt rose gold, is fitted with anti-reflective scratch-resistant sapphire crystal up front and a transparent case back that offers a view of the movement within.
Powering the watch is an automatic chronometer movement — COSC certified for precision — with chronograph complication. A fixed bezel and 100m/330ft of water resistance round out the case's specification, while the absence of a screw-in crown keeps the profile clean and accessible.
The silver dial pairs with a brown alligator/crocodile leather strap secured by a deployant buckle, lending the piece a warm, dressy character that complements the rose gold case without sacrificing the Speedmaster '57's distinctly sporty origins.
