【High Security & Resettable】Smart wind up lock, 4 digits 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 arrow2, rotate the lock as shown in picture 3, rotate the word wheel to set the password you want. 4. Return the lock to the initial position, the password has been set successfully. 【Heavy Duty Lock】This bike cable is made of strong steel cable, the protective PVC jacket prevents scratches and lasts longer. With high strength zinc alloy lock head, sturdy, durable and rustproof. 【Free Combination】2 bike locks are included, meet all your needs, each bike lock can be used separately or combined with each other. You can freely combine them into a larger lock, endless and widely used. 【Easy to carry】The bicycle security lock has a mini design, lightweight, can be carried on the back seat, frame or bag, etc. It is stylish and beautiful, matching a beautiful scenery with your