Model : Sheen Finish Stainless Steel 316 Caseset Unidirectional Rotating Diver Bezel, Blue dial,, Numeral Hour Index, Very Good Lume Dot Hour Markers and Bezel Dot and Needleson Leather Strap with Insignia Tang Buckle Movement: Asian 2813 Automatic Movement, 21J, Insignia RotorFunctions: Hours, Minutes, Seconds Date : 3.00 Adjustment via Crown, Dimensions : Dia 45mm x 18mm Thk Material : 1 piece forged 316F Stainless Steel Caseset Construction Back : Solid case back with detail Engraving Crown : One-piece Screw down crown with o ring Crystal: Sapphire crystal, AR coated.