These bright, waterproof EzyDog Adventure Lights can either attach to your dog lead and illuminate your path, or work as a pet beacon so you always know where they are. The lights can be attached to any existing dog lead, harness or collar with the included velcro strap, and are easy to turn on and off by simply rotating the top. With a long battery life that\'s been fully tested to military standards, they provide you with the safety and visibility that you need for the roads or the park. Waterproof to 100mSuper Strong - can withstand a load of 100kgVisible up to 5km100 hours of battery life when on steady, 250 hours when flashing