The led flasher attaches to the dog collar or lead in seconds. Ideal for walking dogs at night or in poor light conditions. These high quality LED Safety Light designed to keep both you and your dog safe. Bright LED visible up to half a Km. These Safety Lights ensures that both of you are visible to others when out and about in the dark, drastically reducing the risk of being involved in an accident or dangerous situation. With these LED lights other road users will be able to spot you from a distance, which leaves them plenty of time to react.