4X Smart Time Lock LCD Display Time Lock Multi-Function Electronic Travel Timer, USB Rechargeable Temporary Timer Padlock USB Lithium Battery Charging, with Display and 3 Small Buttons to Set Hours or Minutes, Setting Time maximum is 99 hours and 59 minutes. USB charging lasts 120 hours. When the lock is locked, it will not open and it is impossible to break it by hand. Please set the time reasonably. The padlock combination is lightweight and suitable for airport and travel security. You can lock your important things at any time to protect your privacy. How do I reset the timer lock? If you find that you cannot use the timeout or the LCD screen does not display. properly. Please follow this procedure for the timer: 1: Press the center of the LCD screen to remove the protective film and tear off the film. 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 all the way, then run it. 3: When you hear a "Bi" sound (in sound mode), the LCD screen is displayed correctly. The timeout was successfully reset. 4: Please re-stick the protective film. weight 30g. Color: Black Material: ABS Package Content: 4 * Time Lock Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.