The four-digit code combination. Key Features High-quality Material: It is mainly made of zinc alloy, stainless steel, PP, and 45Cr steel with a rust prevention process which is very strong and durable with the advantages of anti-shear, anti-saw, anti-pry, and anti-drill, so it can protect your bike from theft and withstand various harsh weather conditions. High Security: It has up to 10,000 combinations of passwords that you can combine with your birthday or other numbers so that only you or someone you trust can open the lock. In addition, the hardened and heat-treated 5 mm thick locking plate for increased hardness and strength to resist damage from external forces. You can lock it with a single press of the "PUSH" button, saving you time and effort. In addition, the equipped key prevents you from forgetting your password and helps you to reset it. Easy to Operate: A simple structure allows you to master it quickly. You only need to enter the correct password to unlock the bike. Storage Locking Rack: It can be mounted on your bike for easy access to the product. Application It can be used for your bikes and motorcycles, locking up houses, garages, construction sites, items around the farm, generators, gates, fences, grills, lawnmowers, sports equipment, toolboxes, ladders, strollers, and more! What to do if You Forget your Password 1.Insert the key. 2.Turn the key. 3.Turn the password wheel (until you can not turn the wheel to retrieve the password). How to Set a Password 1. Open the locking plate. 2. Remove the back cover. 3. Pull up the carabiner. 4. Set a new code and align the mark. 5. Lower the carabiner. 6. Close the back cover and the code is set. Specification     Material: Zinc Alloy, 45Cr Steel, Stainless Steel, PP Color:Black and Orange / Black Process: Rust Prevention Lock Cylinder: Password and Keys Password Combination Form: 10,000 Product Size(D*H): 6.3*9.1cm/2.48*3.58in Lock Plate Length: 88cm/34.65in Package Size: 15*11*7.3cm/5.91*4.33*2.87in Lock Plate Thickness: 5mm/0.2in Gross Weight: 0.89kg/1.96lbs Package Included 1* Folding Lock 1* Storage Locking Rack 2* Keys Other Accessories for Use