SAFE&RESETABLE: Smart 5-digit resettable combination bike chain lock, much safer than other 4-digit locks. Easy to set your own personalized number combination. STURDY & DURABLE: It is hard to break through because the lock cylinder of the bike lock is made of zinc alloy. The bike chain lock is made of 6mm alloy steel, which is drill resistant and anti-tech unlocking. SCRATCH RESISTANT FABRIC PROTECTION: The bike chain lock is wrapped with a high-quality polypropylene fabric, which is scratch resistant and wear resistant, heat and ice resistant; It protects the chain and prevents it from scratching your bike frame, long service life. CONVENIENT TO USE: The combination locking mechanism provides keyless convenience and sets your own password in simple steps. With the keyless convenience lock, you don't have to worry about losing the key and forgetting to carry it. The code design saves you the hassle of carrying keys. The code is resettable - there are 10,000 combinations, the default code is 00000. MULTIPURPOSE: The chain lock is 830mm long, long enough to connect 2-3 bikes together or attach your bike to a tree, gate, fence, railing, thick poles and others. The lock can also be used for motorcycles, scooters, skateboards, grills, ladders, doors, lawn mowers and many others. Weogine offers a one-year warranty, we will either replace it for free. SAFE&RESETABLE: Smart 5-digit resettable combination bike chain lock, much safer than other 4-digit locks. Easy to set your own personalized number combination.