Material: Nylon webbing (black edge, color edge), two round optical fibers, F5 LED light, ABS switch box, POM plastic buckle, iron chrome plated D ring color: blue Features: environmentally friendly material Battery: USB charging Running time: 7-8 hours Size: 40cm*2.5cm Walking your dog at night, in order to improve the safety of your dog, our company’s LED light-emitting collar, leather belt or wire harness are your good choices to keep your dog black Used for Glowing in the dark can ensure that your dog will not be hit by a car or bicycle to the greatest extent, reduce the risk of injury or potentially fatal accidents, and better ensure their safety. You can also know their exact location in the dark. .