Hidden Password and Error Prevention The password is located at the bottom of the lock and is hidden. To change the password, you need to unscrew the screw and push the setting key up until you see the "SET" key, then reset the password. This can effectively avoid the problem of unable to open the password due to inadvertent password change.One Key Unlock FunctionThe original lock password is 0-0 -0-0. After adjusting the password, press the middle button to open the lock, which is very convenient to use. Note : Please take a photo to record the new password when changing the password, to avoid unable to open it.Strong Security PerformanceOne-piece alloy lock body, Zinc alloy lock hook, 8mm anti-pick shackle, cannot be manually pulled out or cracked, and can effectively prevent shearing and picking. The 4-digit metal password wheel has 10000 password combinations, which can achieve a high level of anti-theft.Unique Appearance DesignThe square shell design is simple and elegant; The surface of the lock has a non-slip texture, which gives it a very good feeling. Only 270g, small size, easy to carry.Wide Range Of UsesIt is suitable for indoor and outdoor places, such as doorways, fences, garages, tool boxes, school lockers, school lockers. gymnastics, etc It is a good choice for personal use and gift. If you have any questions about our products, please feel free to contact us! Note: The data are all manual measurement, please allow 1-3cm error, due to the difference in light and display, there will be some color difference, depending on the physical item received.