Walking your dog at night can be dangerous.  It becomes very hard to see them when you let them off their leash.  This collar has a built-in LED light that will solve that problem.  All you have to do is click a button and choose which light setting you would like to see on your dog.  There are light options from repetitive flashes to constant light.  And don't worry, the lights won't bother your dog since it is placed around his/her neck for safety. The high grade nylon webbing is very durable and built to last.  An easy snap-in buckle and convenient steel ring for attaching a leash is also included.