... Nylon LED light collars for dogs, it's visible at 400 meter distance, the webbing ... optional, quick flashing and slow flashing mixed makes it’s moreattractive, due to special drawer type battery ... box, it’s easy to change the battery. Product Name: ... ◊ Item No.: YZG-DLRDR ◊ Led Flashing Dog Collars's Material Available: PP, Nylon, Polylon etc. ◊ Material composition ...