Nite Ize PetLit LED Collar Light, Dog Or Cat Collar Light, Replaceable Batteries, White LED Jewel Design CLIP ON PET COLLAR LIGHT - This LED collar light clips easily to your dog or cat collar to make them instantly visible in the dark REPLACEABLE LONG-LIFE BATTERY - Included lithium battery can be easily replaced for use over and over again TWIST ON/OFF - Easily activate the PetLit with a twist, and save the batteries by turning it off the same way FUN, COLORFUL DESIGNS AVAILABLE - The bright white LED is paired with a fun design, you can pick one for each of your pets SECURE CARABINER CLIP - Easily clip the light to the D-ring on your pet's collar WORRY-FREE GUARANTEE - all Nite Ize products are backed by our Worry-Free Guarantee