USB lithium battery charging, with sn 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.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 safety. You can lock your important items at any time to protect your privacy.Model Number: Smart Time Lockweight 30gFeature 1: LCD Time LockFeature 2: USB Rechargeable Temporary Timer PadlockIf you find you can not operate the timeout or the LCD is not displayed. correctly. Please follow this way to timer:1: Press the center of the LCD sn to strip the protective film and tear the film off. You will find a stop under a screw on the left side of the sn.2: Find a metal pin 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 will display correctly. The timeout has been successfully reset.4: Please glue the protective film back on.colour:BlackMaterial:ABSsize:7.3 x 4.7 x 2CmPackage Contents:1 x Time LockOnly 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. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.