Orient #BEM6H00LB Men's Sport 50M Tri Star Black Dial Self Winding Automatic Watch Imported Orient 21 Jewels Self-Winding Automatic Movement, Oscillation Frequency: "21,600 oscillations per hour (6 beats per sec)" Stainless Steel Case and Band with Fold Over Deployment Clasp Mineral Crystal, Day/Date Display with Spanish Option, Luminous Hands and Markers Case Size: 37mm Diameter, 11 mm Thickness Water Resistant - 30M, Screw Down Caseback