Orient SEL06002B Men's Limited Edition X STI M-Force Power Reserve Automatic Diver 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, Push Button Release Clasp with Safety Lock Feature Sapphire Crystal, Date Display, Luminous Hands and Markers, Power Reserve Indicator Case Size: 48mm Dimater, 13.3mm Thickness Water Resistant - 200M, Screw Down Crown and Case Back