Product Description: USB rechargeable lithium battery, with an LCD screen 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 locked, it cannot be opened and is impossible to break by hand. Set the time reasonably. The combination 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 displaying correctly, please follow this method to reset the timer: 1. Press the middle of the LCD screen to remove the protective film and peel off the film. You will find a hole under a screw on the left side of the screen. 2. Find a metal pin or metal clip and insert it into the hole, then run it. 3. When you hear a "Bi" sound (in sound mode), the LCD screen will display correctly. The timeout has been reset. 4. Please stick the protective film back on. Weight: 57g Color: White Material: ABS Package Contents: 1 x Time Lock Note: Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.