More than just reflective - this new product incorporates a patented advanced combination Polymer/LED lighting technology, combining reflective material with led lights to enhance visibility. Unlike many similar products this collar is provides maximum visibility in low light, no light, or night situations. Choose between continuous light or flashing. This innovative and durable product features a quick-release buckle that snaps on or off in seconds. The top positioned D-ring is compatible with all standard leashes. Runs on one standard watch battery (included) and last up to 200 hours in the flashing mode. Small, to fit 12-16in neck.