Longines HydroConquest Automatic Chronograph Black Dial Men's Watch L3.644.4.56.2 - Longines HydroConquest Automatic Chronograph Black Dial Men's Watch L3.644.4.56.2Movement: High Grade 7750 Automatic Chronograph MovementCase Material: Stainless Steel CaseCase Diameter: 41mmCase Thickness: 15.5mmSize and Weight: The same as Original Longines HydroConquestDial Style: Black Dial with Chronograph Sub-dialsBezel: Un-Directional Rotating BezelCrown: Screw-down CrownGlass: High Quality Scratch Resistant Mineral CrystalFunctions: Date, Hours,