The 1. In the dark: Personalized illuminated dog collar with TPU light tubes and reflective nylon stitching ensures your dog remains highly visible and safe during night walks. Beautiful bright dog lights make it easy to keep track and find your pet dog in the dark 2.USB charging: These dogs lighting collar for darkness takes about 2 hours to fully charge can also last 1.5 ~ 2 hours stable glow,4 ~ 6 hours for the model, including microcable, plug into any USB interface charging any device adapter, computer, convenient, save money, environmental protection This night lighting collar is waterproof and works well in the daily rain, please note that guide dog collar charging is only waterproof and is not suitable for swimming or soaking. 3.FIT for small pets: With a total length of 9.4 "~13.8" (24~35cm), our dog collar lamp is fully adjustable, reflective, well-made and bright enough, this walking lamp is designed for small dogs like Chihuahuas, poodles, or cats. Please note that if used on a cat, the dog's light collar does not have a dissociation buckle. 4.EASY to use: There is a durable D ring connected to the ultra small bright collar dog line, used as a dark walk dog lamp, quick release advanced ABS buckle, EASY to wear/take off. High quality flash dog collar lamp, good value for money.