Recommendations: manual winding movement watches should as far as possible once in every day the same time winding watches to make enough energy in the next 24 hours. Self winding watches the energy source to the motion of the arms of the wearer， so normal wear without manual winding， only because the amount of movement of the wearer to for clockwork compensatory and enough energy， use method to compensate for the manual winding， and winding crown rotation control in less than 20 laps. More than 40 hours not wearing the automatic winding watches should be in again when wearing the crown turn 20 laps， to once again start machine drive system. The quartz watch battery should be replaced once every two years to prevent the movement of the movement and the possibility of a sudden stop. To prevent moisture into waterproof case and keep watch， please ensure that the crown moment is locked