USB lithium battery charging, belt and 3 small buttons to set the hour or minute, the maximum setting time is 99 hours and 59 minutes. USB charging lasts 120 hours. When the lock is locked, it will not open, impossible to break It is handmade. Please set the time reasonably. The padlock combination is lightweight for airport and travel security.You can lock your important items anytime to protect your privacy. Function 1: LCD Time Lock Function 2: USB Rechargeable Temporary Timer Padlock If you find that you can't operate the timeout or the LCD doesn't display.correct.Please do the timer as follows: 1:Press the center of the LCD to peel off the protective film and peel off the film.You'll find a stop under the screw on the left side of the .2:Find a metal pin or metal clip and insert it all the way into the hole, and run. 3:When you hear the "Bi" sound (in sound mode), the LCD will display correctly.The timeout was successfully reset. 4:Please reattach the protective film. Color: Black/White Material: ABS Dimensions: 7.3 x 4.7 x 2 cm Package Contents: 1 x Time LockOnly The above package content, other products are not included. Note: 1. Please allow a little error due to manual measurement. Please make sure you don't mind before bidding. 2. The color may vary due to different monitors, please understand. Note: Hello, please pay attention to your delivery address when purchasing products. If your receiving information (such as: name, street, house number, doorbell/email without name and other information is incorrect, the order will not be delivered correctly.)