High Security and ResettableSmart wind-up lock, 4-digit and resettable, can set up 1.0000 different combination codes, the factory default password is 0000. 1. Align the initial password with the position marked by arrow 2. Rotate the lock as shown in picture 3. Rotate the word wheel to set the desired password. 4. Return the lock to the starting position, the password has been set successfully. Sturdy lockThis bicycle cable is made of strong steel cable, the protective PVC coating prevents scratches and lasts longer. With high strength zinc alloy lock head, sturdy, durable and anti-rust. Free Combination2 bike locks are included and meet all your requirements. Each bicycle lock can be used separately or combined with each other, you can freely combine them into a larger lock which is endless and widely used. Easy to carryThe security lock for bicycle has a mini design, is light, can be carried on the backseat, in the frame or in a bag, etc. It's stylish and beautiful, and goes with a beautiful scenery with your bike. Wide ApplicationNot only used in bicycles/e-bikes, but also other outdoor/sports equipment (eg scooter, gate, etc.) With regular lubrication of the keyhole and keyhole, the service life of the lock can be effectively extended.