Orient Black Automatic Power Reserve Watch CFDAC004B Orient 21 Jewels Self-Winding Automatic Movement , Oscillation Frequency: 21,600 oscillations per hour(6 beats per sec) Stainless Steel Case and Band with Push Button Butterfly Deployment Clasp Mineral Crystal, Date Display, Luminous Hour & Minute Markers Power Reserve Indicator, Pressure Press Caseback Water Resistant - 50M, Case Size: 34mm Diameter, 13mm Thickness