Package includes: 9 x LED dog collar lights in bright colors, white, yellow, green, red, blue, purple, colored, transparent white, orange, each with 3V lithium batteries. Each is 5.5 x 3.5 x 2.5 cm in size. Easy to use: The pet collar light has 4 lighting modes: Continuous light, slow flashing, fast flashing, off Switch through by pressing the middle, press once for steady light, twice for fast flashing, third for slow flashing and press the button switch for off. With the easily exchangeable 3V button battery you can clearly identify your pet from a distance. Safe and visible: The dog collar safety light is lightweight, without stressing your pet, and it wont even feel it. Waterproof material and secure stainless steel clip make it durable over 100 hours of working time to ensure you dont have to change the batteries within 60 days. Wide use: The LED light collar is not only suitable for the safety of your pet, but also for bicycles and for running. It provides an ambient light that is bright enough for reading, finding a key or keyhole, and locating tent lines and camping equipment. Protect your pets: The safety collar is handy to clip on when you want to move through the dark. It protects you and your pet at night. The weatherproof collar tag is more than 1/2 mile visible, eliminating the worry of rain or water. The secure stainless steel spring clip makes it easy to attach to the D ring on your dogs collar.