Safety LED Light with Collar for Safety at Night.  Bright, long lasting light illuminates 15 feet ahead - Drivers see your dog up to 200 feet away, lights your path when you walk your dog and helps you find your dog when outside.  Great for older dogs or dogs with vision problems!  Takes 3 AAA batteries (not included).  Lightweight - only 2 1/2 ounces.  Adjustable elastic band collar fits 8" to 26" neck sizes.  Elasticized so it can be slipped over head or buckled on.  Can be worn along with dog's collar or light can be attached to existing collar.  The PupLight can be rotated on its fur guard to accomodate small dogs and puppies.