The product description 1. Light-Up Collar - This light-up collar helps keep small dogs and cats visible and safe in the dark with LED and TPU light guides and reflective nylon needles. He can see up to 500 meters. Drivers can see your pet in advance. 2. Ideal for small pets - Ideal for small dogs such as chihuahuas, poodles or cats. Its total length is 12 inches and also has an adjustable buckle that you pull to the right size for your pet. Lightweight and breathable nylon tape, suitable for small dogs. 3. Rechargeable Collar - This luminous dog collar can be charged with any other device for daily use via USB cable. Batteries cost nothing extra. Any device can provide 3-5 hours of fast flash and 1-2 hours of constant glow for every 2 hours of charging. No need to replace the battery, energy saving and environmental protection! 4. Flashing Mode – This lighted dog collar has two flashing modes: fast flashing and steady flashing. Change the flash mode by clicking the plastic release