AUTOMATIC Self-winding: Automatic movements mark the passage of time through a series of gears and are powered by the movements of your wrist when you wear it. It will stop if the watch stops moving for a long time, then turn the watch crown by hand. Keep the watch away from magnets to avoid it from stopping working. (Daily use, magnetic field/temperature and shock will affect the accuracy of the watch, manual adjustment can reduce the deviation) LUMINOUS HANDS: The darker the night gets, the more clearly you can see the luminous hand in the dark when the watch has absorbed enough light during the day. NO BATTERY: You only need to wind up the mechanical watch and it will continue to work, you don't need to worry about the battery running out. Please note that you should wind it up every day. 3 circles, transparent skeleton dial, unique design. BEST CUSTOMER SERVICE: If you have any questions about the quality of the watch, please contact Forsining Watch, we will give all customers the most satisfactory answer.