Omega Seamaster Professional 300M 212.30.41.20.03.001 Blue Ceramic Automatic

I do not know its service history and have not tested its accuracy, power reserve, or water resistance. Blue ceramic unidirectional rotating bezel. Blue no-wave dial. The watch is ingood pre-owned condition with normal signs of wear consistent with age and regular use, including scratches and scuffs to the case, bracelet, clasp, and other polished surfaces.