OmegaSpeedmaster Day-Date 39 Stainless Steel / BlackREF NUMBER: 3820.50.26OmegaSpeedmaster Day-Date 39 Stainless Steel / BlackREF NUMBER: 3820.50.26ModelSpeedmaster (Non-Moonwatch)Case Diameter39.00 mmDial NumeralStick / DotMovementMechanical AutomaticPower Reserve42 hManufacture Year-Dial MaterialBlackDial Movement CaliberOmega 1151Case MaterialStainless SteelWater Resistance30.00 m