Stuhrling Original Men's 574.03 Analog Executive II Stainless Steel Automatic Skeleton Watch with Brown Leather Band Round watch in polished stainless steel featuring skeleton dial with rose gold-tone accents, subdial, and plume-shape hands.44 mm stainless steel case with Krysterna crystal dial window.Automatic-self-wind movement with analog display.Scale-embossed leather band with buckle closure.Water resistant to 50 m (165 ft): In general, suitable for short periods of recreational swimming, but not diving or snorkeling The watch has an automatic/mechanical movement which needs to be wound manually.Please be aware that the automatic/mechanical movements have an outer range of accuracy of approximately thirty-ninety seconds per twenty four hour cycle.Below are clear instructions on how to manually wind the watch. 1) Turn the crown clockwise only (or upwards towards the 12) while in position one (pushed in to the case of the watch as if you were wearing it) 2) Keep turning for 30 revolutions or until you feel a slight increase in resistance. 3) If the watch is being worn everyday it should be turned 5 to 10 times approximately every 2 days. 4) If you do not wear the watch every day then you need to wind it approximately 25 times each time before wearing it.