Model : PVD Black Coated Brushed Stainless Steel Caseset, Polished Stainless Bezel with Black Infil and Blue Lume Diver Indexes , Blue Dial, Blue Hour Markers , Green Lume on Hour Markes and Needles, Black Rubber Strap with Insignia Tang Buckle Movement: Japanese Miyota Automatic Movement, 28800bph, Insignia decorated rotor Functions: Hours, Minutes, Seconds. Dimensions : Dia 43.5mm x 16.5mm Thk Material : 1piece Forged 316 Stainless Steel,Thick PVD Black Coating Back : Solid Insignia Caseback with Detail EngravingCrown : Screw Down Crown Guard with Lock Style Big Crown with o ring Crystal: Sapphire Crystal, AR Coated As Per GenuineWater-resistant