Brand Seiko. Model SRPD85K1 Movement Automatic, 24 Jewels, Cal 4R36. Manual Winding Capability Glass Hardlex Crystal Dial Color Brown 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)