FuzzyGreen Pet Collar Clip-on LED Go Anywhere Safety Lights Ball Dark Glowing Disco Pendant The best safety option for night walks.Flash mode for safety and signaling Choose from two modes: press once for steady glow, twice for continuous flash. You also can clip it on your items.Its long-lasting LED provides an ambient glow bright enough for everything from reading fine print to finding your car door keyhole. Best gift for your pets! Suitable for outdoor.Size:length 5.5cm/2inch,diameter 3.5cm/1.4inch It is also an excellent way to ensure both you and your pet's safety.