The SpotLit is a bright little LED collar light designed to keep your dog visible at night. With Disc-O Select, you can choose one of six colors to easily identify multiple pets or leave it in color-changing Disc-O mode. Set in a lightweight stainless steel carabiner, it attaches quickly and securely to pet collars to keep your animals seen and safe at night. With Disc-O Select technology, you can choose from six different colors making it easier to keep track of multiple animals, or leave it cycling through all the colors in Disc-O Mode. The long-lasting LED is bright enough to be seen from far away and keeps pets visible whether you're on a camping trip or walking in the city. Powered by two replaceable 2016 batteries (included), this little light will keep going for over 20 hours.