A mechanical watch should be wound manually every day before wearing. The automatic movement winds up by the movement of the wrist. Wearing the watch for 10-12 hours generates enough power for the watch to run overnight. If the watch is not being worn long enough, not worn daily or if the wrist movements are insufficient, the power reserve diminishes constantly. In this case we recommend to wind the watch manually before wearing. Approx. 15-20 winds of the crown is enough to ensure its reliable functioning.