Night lighting design to protect you pets: these dog collar LED lights can be illuminated at night, the light is visible from more than 1/2 mile; When you and your pet need light in the dark for a night walk or a trip, you can easily clip the safety collar lights to your pet's collar to keep you and your pet safe; The water resistance ability enables the lights to be applied normally even in rainy days, which is proper for night walks or travelMultiple purposes: safety collar lights can be easily attached to your pet's collar, or applied as a decoration knob, keychain for locating tent lines and camping gear; Dog collar lights collars provide ambient lighting which is bright enough to read, find the key or keyhole, locate tent line, and for camping equipment; When running or cycling at night, it can be hung on the body or the bicycle to remind other pedestrians or vehicles; They are nice gear for pre-dawn or outdoor at nightNo battery providedDelivery Quantity: 6pcs,Package Contents: Only the above package contents, excluding other products.Size: Length 5.5cm* Diameter 3.5cm Thickness 2.5cm(Reminder: The size is measured manually, please allow 1-2 cm measurement error)Color: Multicolor(Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)