GrahamSilverstone Luffield Night Racer Chronograph GMTREF NUMBER: 2GSIUS.B08A.K07GrahamSilverstone Luffield Night Racer Chronograph GMTREF NUMBER: 2GSIUS.B08A.K07ModelSilverstoneCase Diameter44.0 mmDial NumeralNumeralsMovementMechanical AutomaticPower Reserve-Manufacture Year-Dial MaterialBlackDial Movement CaliberGraham G1721Case MaterialStainless SteelWater Resistance100.0 m