USB charging of lithium battery, with and 3 small buttons Compatible with setting hours or minutes, the maximum setting time is 99 hours and 59 minutes. USB charging lasts for 120 hours. When the lock is locked, it will not open and it is impossible to break it Compatible with hand. Please set the time reasonably. The padlock combination is light and suitable Compatible with airport and travel security. You can lock your important Compatible with items at any time Compatible with protecting your privacy. Model number: Smart Time Lock weight 60g Function 1: LCD time lock Function 2: USB Rechargeable Temporary Timer Padlock If you find that you cannot use the timeout or the LCD screen is not displayed correctly. Please follow this way Compatible with setting the timer: 1: Press the center of the LCD screen Compatible with removing the protective film and tear off the film. You will find a stop under a screw on the left side of the. 2: Find a metal needle or metal clip and insert it into the hole to the end and then run it. 3: When you hear a \"Bi\" sound (in sound mode), the LCD screen will be displayed correctly. The timeout has been reset. 4: Please glue back the protective film. color: Black Material: ABS size: 7.3 x 4.7 x 2Cm Package content: 2 x Time Lock Only the above package content, other products are not included. Note: Light and different displays may cause the color of the Compatible with item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm.