Unique unlocking design: you don't need to complicate things, just set the unlocking time. USB Rechargeable: The safety padlock with timer has a USB lithium battery with display and buttons and can be set for hours or minutes up to 99 hours. Wide range of applications: lock addictive items such as mobile phones or snacks. Suitable for kitchens, gymnasiums and schools. Uses: If you are a "delayed" patient, you can perform behavioral corrections with a timed lock. Note: If the lock is locked, it cannot be activated manually. Please use the time responsibly. Note: The data are all measured manually, please allow 1-3cm error, due to differences in light and display, there may be some color differences, please refer to the actual item received.