Seiko Model No. SRPD55K1 Series Seiko 5 Sports Movement Automatic, 24 Jewels, Cal 4R36. Manual Winding Capability, Second Hand Capability Glass Hardlex Crystal Dial Color Black Case diameter 42.5 mm without Crown. Case Thickness 13.4 mm. Lug Width 22 mm Case Stainless steel. Band Nylon Clasp Pin Buckle Bezel Uni-directional Rotating Calendar Day and date. Luminous Hands & Markers. Water Resistant 100 Meters (Swimming) 1x Official Seiko Warranty Card 1x Seiko Box