High Visibility & Safety LED Dog Collar - The collar is made of high-density nylon material, and the optical fiber is covered by mesh woven from the fishing line, which greatly increases the light transmittance while protecting the fiber. Experiments show that the ray-tracing distance can reach 500 meters. So that you can keep track of your dog at night or in the early morning. Keep your dog safe in dark environments. Lighted Dog Collar USB Rechargeable - For the convenience of pet owners, our collars are designed to be rechargeable, with a 250mAh battery and up to 10 hours of use, fully charged in just 2 hours. No worry about battery replacement and no additional costs. Water-resistant Light Up Dog Collar with 7 Colors - Each collar is designed to be waterproof and dustproof and can be used normally in most environments. For example, snowstorms, heavy rain, and other weather, but not for swimming. And we have seven colors for each collar, so you can make your dog more unique and different from other dogs with just one click to switch, and you can quickly find your own among many dogs. Glowing Dog Collar Light Durable & Adjustable - Precision workmanship and sturdy accessories make the whole collar more durable, it can be used with any leash, when you take your dog out for a walk, you don't need to worry about wearing other collars. This light-up dog collar is perfect whether day or night. Easy to put on with a quick-release buckle. And the led dog collar can be adjusted to fit any size.