[Night Light Design] - This dog collar light can be illuminated at night with more than half a mile visibility, making it obvious when walking or traveling at night, ensuring your safety and that of your pet. is lightweight and won't burden your pets, they won't even smell it, so there's no need to worry about chewing. [3 Light Modes] - This bright dog light has 3 light modes: always on for 30 hours, flash mode for 35 hours and off mode. Simply press the middle part to change the light mode. Using a secure stainless steel spring clip, it can be easily attached to the D-ring of the dog collar. [Durable and Waterproof] - The snap-on dog collar light is made of sturdy stainless steel clips, which are not easy to fall off. Sturdy ABS material and IP44 waterproof design can be used in rainy and muddy roads, but it is not suitable for diving.[Rotating shade] - The shade adopts a rotating design, and the switch is pushed to open compactly. This way you can easily replace the battery for long term use. (It is recommended to turn the switch to the upper clip to prevent the light from turning off in the event of accidental contact by pets.) [Multi-purpose] - The dog collar lights can not only protect your pets, but also remind other pedestrians or vehicles hanging on your body or your bike when running or cycling at night. It can provide ambient light for reading outdoors, finding keys or keyholes, locating tent lines and camping gear, and can also be attached to people to improve visibility. Product Specification:* Battery mode: CR2032 Material: ABS + stainless steel Autonomy in light mode: 30 hours Autonomy in Flash mode: 35hours Lighting mode: always on mode, flash mode, off Weight: 13.5g Product size: 5.5x3.5x2.5cm Warning:* The lamp has a certain waterproof effect, but please do not soak it in water. This is neither an animal chew toy nor a children's toy. Contains batteries, please use with caution. Contains small parts, please keep them away from children under 3 years old. Package Contents:* 4 x LED dog collar lights