Welcome to our shop! Product Information: When the lock is locked, it will not open and it is impossible to it by hand. set the time reasonably. With screen and 3 small buttons to set hours or minutes, the maximum setting time is 99 hours and 59 minutes. USB charging 1 hour can last for 30 days. The padlock is suitable for airport and travel safety. You can lock your important items at any time to your privacy. Specification: Material: ABS/Steel wire rope Charging voltage: 5V Time range: 1 minute - 99 hours 59 minutes Package Included: 1 x Smart Time Lock Note: 1. Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures. 2. Please allow 1-3cm error due to manual measurement. (1 inch = 2.54 cm) Thanks for your support :)