Material: polyester webbing, fish-mesh transparent surface, super bright light-guiding flat optical fiber (new material)Flashing mode: long light. fast flashing. slow flashing (controlled by switch)Battery: Button battery driveColor:Orange,Yellow,Red,Black,Blue, Green,PinkSizeWidth Telescopic RangeXL 2.5cm 52cm-60cm 8cmSpecification:1. Battery life: 60-80 hours of continuous light, 2-3 months of normal use; batteries can be replaced by themselves, and are available in convenience stores or supermarkets.2. This product is suitable for walking the dog in the dark environment or at night, outdoor and pet sports. It emits light through super bright optical fiber, which acts as a warning, while expressing personality and fashion.3. The design of the product is stylish, no matter whether it is day or night, when the light-emitting function is turned on and off, it is suitable for pets.4. The LED pet safety collar is designed to give you peace of mind when walking your dog at night.5. Whether your beloved pet is walking on the road or on a leash, you can rest assured that they will be seen by others on the street. This will help prevent your pets from getting lost in the dark. People driving or cyclists can see them, and if they are unfortunate enough to escape from the home, they are not difficult to find.includes:1 xLED Pet Safety Collar