The DogBrite dog collar and leash is the only EL-lighted, waterproof collar and leash on the market. No More LED! EL lighting is much more fl exible, weighs much less and is more comfortable to wear than LED. The collar is adjustable from 10 to 21 inches and runs on inexpensive AAA batteries. The leash is six-feet long, lights from top to bottom and is rechargeable.