【High Security】 4 digit lock offer 10,000 combinations. It is safer than four-digit lock. Heat treatment plus hard quenched steel. 【Material】 Heavy duty locking mechanisms and hardened steel lock rings can withstand some serious damage wherever you are, keeping your property safe 【Easy to use】 You can try and set up your combinations. the lock is mini and portable design, you can it in the case. 【Design】 The surface of the lock is made of baking varnish, which is different from other lock's appearance. It is elegant and graceful. 【Multipurpose】 The lock is suitable for Gym, bicycle, toolbox, luggage, sports bag and cabinet. You can use it to lock the bag or luggage when you go to Gym or go traveling. How to set password? 1. Make sure the lock is set to default 0-0-0-0 2. Pull up the shackle 3. Turn the dial knob clockwise 90° 4. Set the password you like 5. Turn the code knob back to the original position, the password is set successfully.