This leash is perfect for those evening walks to help keep you and your dog visible as it gets dark! This rechargeable LED leash flashes as you would like from various speeds of flashing to a solid light. This clasps right onto your dog's regular collar/harness just like any other leash, it just adds extra visibility. Then, use the universal charger to plug it in and charge it for your next use! Charging cable is included with the leash so there is no need to buy batteries! Leash is 4 feet in length.