Easy Resettable Passcode:Changing the combination on this padlock is straightforward. Start by unlocking with the default code 0-0-0-0. After unlocking, turn the shackle counterclockwise 90 degrees and hold it firmly. Then, set your new combination and reset the lock by turning the shackle 90 degrees counterclockwise again. It's advisable to make notes or take a photo after each password change.