Seiko 24 Jewels Self-Winding Automatic Movement with Hackable Second Hand (Calibre 4R36)Stainless Steel Case, Silicone Band, Regular Connect Type Buckle ClaspHardlex Mineral Crystal, Date Display, Luminous Hands and MarkersCase Size: 44 mm Diameter, 12 mm ThicknessWater Resistant - 200 M, Screw Down Crown and Case Back