Longines HydroConquest 39mm Black Dial Steel Men's Watch L37804566

100% Authentic with 5-Year Longines Backed Warranty Included. Authorized Longines Retailer. Item Longines Men's Watch Model # L3.780.4.56.6 Collection HydroConquest Case Stainless Steel Case Back Screw-Down Stainless Steel Bezel Unidirectional Rotating Bezel Dial Color Sunray Black Dial Features Date Display / Silvered Polished Hands / Applied Arabic Numerals & Indexes / Luminous Hands & Markers / Swiss Super-LumiNova Clasp With double safety folding clasp and integrated diving extension Strap Color Silver Strap Material Stainless Steel Strap (19 mm Strap Width / 8 inches Strap Length) Movement Self-winding mechanical movement beating at 25'200 vibrations per hour, with a power reserve of approximately 72 hours / L888 Case Width 39 mm (Case Thickness 12.20 mm) Water-Resistant 300 meters Crystal Scratch-resistant sapphire crystal, with several layers of anti-reflective coating on the underside