This LED light dog collar light is designed to keep your puppy safe while walking at night. It allows drivers, bicyclists, joggers and others to see your puppy from a great distance. You can also see your dog better in the dark of night. The night walking dog collar has 3 light modes - fast glow, slow glow, and steady glow. Not just for your pet, the clip-on LED dog collar light can also be used as a keychain or decorative accessory, clip on your backpack, bike, camping tent.