Keyless Unlock: Say goodbye to the traditional method of unlocking keys and say goodbye to the problem of not being able to unlock due to forgetting the key. The password can be changed at will for each lock, and the word password can be reset in 4 steps, which is simple and convenient. 4-digit unlocking, the probability of unlocking is 1/10000. Just take a photo with your phone to avoid forgetting the password. Fine Craftsmanship: The lock part is made of industrial grade environmentally friendly hard plastic, strong and durable. The password wheel is flexible and will not easily get stuck and unable to rotate, which will prevent unlocking. Thicker Steel Cable: The lock body is made of multiple strands of high quality zinc alloy steel cables coiled and braided, which greatly improves ductility and shear strength. Ultra-light weight of 100g and the mini size can even be placed in your pocket. (Two chains can be connected and combined to become a longer lock!) Thoughtful Consideration: Considering the use of different weather and environment conditions, high quality PVC plastic is used as the protective shell, single molding and cutting the entire section. Seamless, waterproof and dustproof, high temperature and corrosion resistance, protect the steel cable from damage and prevent the steel cable from scratching the bike. More apps: A good lock is a good tool. You just need to use your imagination. Whether it's a bicycle, motorbike, e-bike or gate, fence, etc., you can use the lock to meet your needs. 4-digit security lock, reset password bicycle lock, thicker zinc alloy steel cable, finer weaving process, the lock head part is made of industrial grade hard plastic, flexible to unlock without getting stuck. Ultra-light and mini in size, two locks can be combined into one longer lock to use! Product specifications: Size: 10.5cm * 11cm