IWCAquatimer charles darwin expeditionREF NUMBER: IW379503IWCAquatimer charles darwin expeditionREF NUMBER: IW379503ModelAquatimer chronographCase Diameter44.0 mmDial NumeralBarMovementMechanical AutomaticPower Reserve68 hManufacture Year-Dial MaterialBlack GlossyDial Movement CaliberIWC 89365Case MaterialBronzeWater Resistance300.0 m