Material: Alloy Color: solid color-black, solid color-pink Dimensions: width 35mm, height 25mm Instructions for use: To use, please follow the steps below: 1. The pre-installed key code at the factory is 0-0-0. Check the 0-0-0 code in the command line. Push the button. Now the lock is ready to open. 2. Press the button with a sharp tool, and hold the button. 3. Rotate the wheel to generate a password. 4. Release the button and the password is now set. 5. Remember your new key. If you want to change, repeat the above steps. The package includes: 1 number key.