SECURE & RESETTABLE: Smart 5-digit resettable combination chain lock, much safer than other 4-digit locks. Easy to set your own personalized number combination. BRAIDED STEEL & PVC COATING: The bike cable is made of high-strength braided steel wire, which can withstand 2.4KN tension and 7KN shear force, offering more strength and flexibility. The protective vinyl coating (PVC) helps prevent scratching and is more durable. SELF COILING & MOUNTING BRACKET: 4 feet by 1/2 inch cable is long enough for different users. Self-coiling design makes it easy to carry. Equipped with a complimentary mounting bracket, the lock can be easily attached to other objects. The quick installation button allows for convenient installation or removal. CONVENIENT TO USE: Combination locking mechanism provides keyless convenience and allows you to set your own password in a few easy steps. With keyless convenience, there is no need to worry about losing or forgetting to carry a key. The code design eliminates the hassle of carrying keys. The code is resettable – there are 10,000 combinations available, making the chance to crack the code only 1/10,000. The default code is 00000. MULTI-PURPOSE: The 4-foot cable is long enough to lock 2-3 bikes together or secure a bike to a tree, gate, fence, railing, thick pole, and more. The lock can also be used for motorcycles, scooters, skateboards, grills, ladders, doors, lawnmowers, and many other items.