USB lithium battery charging, with touch and 3 small buttons to set hours or minutes, the maximum setting time is 99 hours and 59 minutes. USB charging lasts for 120 hours. Once the lock is locked, it cannot be opened and it is impossible to break it by hand. Please set the time reasonably. The padlock is suitable for airport and travel security. You can lock your important items at any time to protect your privacy. How to reset the timer lock? If you find that you cannot use the timeout or the LCD screen is not displayed correctly. Follow these steps to reset the timer: 1: Touch the center of the LCD screen to remove the protective film and peel it off. You will find a stopper under a screw on the left side of the screen. 2: Find a metal pin or metal clip and insert it into the hole and then push it. 3: When you hear a "Bi" sound (in sound mode), the LCD screen will be displayed correctly. The timeout has been reset. 4: Glue the protective film back on. Weight: 57g Color: white Material: ABS Package content: 1 x Time Lock Only the above package content