OmegaOMEGA Speedmaster MK40 Triple date 3520.53 Automatic ChronographREF NUMBER: 3520.53OmegaOMEGA Speedmaster MK40 Triple date 3520.53 Automatic ChronographREF NUMBER: 3520.53ModelSpeedmaster Mk40 Triple dateCase Diameter39.0 mmDial NumeralLume sticksMovementMechanical AutomaticPower Reserve42 hManufacture Year-Dial MaterialBlack MatteDial Movement CaliberOmega 1151Case MaterialStainless steelWater Resistance50.0 m