Time Lock Multifunction Electronic Time Lock I3Z81387\n\nProduct Description:\nUSB lithium battery charging, with sn and 3 small buttons to set hours or minutes, the maximum setting time is 99 hours and 59 minutes.\nUSB charging lasts for 120 hours.\nWhen the lock is locked, it not open and it is impossible to break it by hand. Please set the time reasonably.\nThe padlock combination is and suitable for airport and travel safety. You can lock your important items at any time to protect your privacy.\n\nHow do I reset the timer lock?\nIf you find you can not operate the timeout or the LCD is not displayed. correctly. Please follow this way to timer:\n1:Press the center of the LCD sn to strip the protective film and tear the film off. You find a stop under a screw on the left side of the sn.\n2:Find a metal pin or metal clip and insert it into the hole to and then run it.\n3:When you hear a \""Bi\"" sound (in sound mode), the LCD display correctly. The timeout has been successfully k