High-quality materials: Made of soft silicone with good elasticity, the dog collar light can achieve a certain degree of waterproof and anti-fall effect, but do not place the pet collar light in the same place, get it wet, or soak it in water to ensure prolonged use. Easy to use: There are three modes of dog collar safety light, constant lighting, fast flash, slow flash, adjustable by buttons. CR2016 button batteries can last 30 hours and are very easy to replace. Lightweight and durable: Lightweight design, will not burden your pet, can come into direct contact with pets. Friction-resistant and durable. 4 colors to choose from: red, blue, green, pink. ?Wide Applications: The flashing light of the dog collar is convenient for finding the pet's position when going out at night, and is also fun to wear on children's bike; It can also be applied to a short-term light source when cycling, camping and hiking, or you can use it as a keychain. ?Package Includes: The package includes 4 pieces