Japan 21 Jewels Self Winding Automatic Movement (Caliber 7S26) Stainless Steel Case, Resin Strap Hardlex Mineral Crystal, Day/Date Display with Spanish Option, Luminous Hands and Markers, Uni Directional Turning Bezel Case Size: 42 mm Diameter, 13 mm Thickness Water Resistant – 200M, Screwed Down Crown and Caseback