Tudor Black Bay 41 - 79540-004 Steel Blu Dial Automatic Bracelet Box And Card 06-2024. Case Case Material Steel Case Diameter Large Size Water Resistance Water resistant to 150 meters Crystal Sapphire crystal Bezel Material Smooth steel bezel, polished finish Case Material Steel case, 41 mm, polished and satin finish Bracelet Material Steel bracelet, satin finish, with folding clasp and safety catch Dial Dial Color: Blue Movement Movement Self-winding mechanical movement, Caliber T600 Wind Crown Screw-lock steel winding crown with embossed TUDOR rose and black anodized aluminum crown tube Warranty Warranty Five-year, transferable warranty, no registration or servicing required