Omega Seamaster Diver 300M Chronograph

About This Watch

The Omega Seamaster Diver 300M Chronograph adds timing capability to the iconic Seamaster diver. Powered by the caliber 9900 — the same column-wheel chronograph movement used in the Speedmaster Racing — this watch combines 300 meters of water resistance with a fully functional chronograph. The 44mm case accommodates the larger movement and chronograph pushers while retaining the Seamaster 300M's signature wave-pattern ceramic dial, ceramic bezel, and helium escape valve. The two subdials display 12-hour and 60-minute chronograph registers. Despite its size, the watch is well-proportioned and wears comfortably thanks to the ergonomic case shape and articulating bracelet. The 9900 features a column-wheel mechanism for smooth pusher operation and a Co-Axial escapement for long-term accuracy. This is the Seamaster for those who want both diving and timing functions in a single, luxurious package. It competes favorably with the Tudor Heritage Black Bay Chrono and Breitling SuperOcean Heritage Chronograph.