Please note this is a MECHANICAL WATCH which will stop working if you are not moving for a long time. Please wind up the watch before EVERY USAGE, and keep the watch away from magnets to ensure the watch keeps working. For detail instructions of the watch, you can see our manual instruction about the watch | HOW TO WIND:Please wind the mechanical watch by turning the crown clockwise for 15 to 20 complete revolutions every day. Over 20 times may do harm to the watch mechanism. | WITHOUT BATTERY:Only need to wind the mechanical watch and it would keep working,don't worry about the battery is dead.NOTE that you should wind it every day. | BEST AFTER-SALE SERVICE: If you have any quality question about the watch,pls feel free to contact Forsining Watch,we would give all customers the most satisfied reply. | Special TRIANGLE Dial DESIGN will make you Unique and more fashionable in street.