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With a design closely akin to its legendary forebear, the Omega Seamaster Ploprof 1200M maintains the robust reliability and water resistance that have consistently marked Omega's divers. Yet it also incorporates meaningful improvements, being powered by the Omega Co-Axial calibre 8500 with its free sprung balance. That movement, introduced in 2007 and crafted from scratch by Omega, stands among the driving forces of the mechanical watchmaking transformation underway at the brand since 1999.