Fearless in the dark using contact lighting technology, double-sided RGB flow ring, four different touch screens show different effects, the flow ring on both sides of the opening can change freely different color effects, very cool, let you and the dog into the safe and attractive darkness. 360 degree anti-tangle design - high precision bearings, support 6000 rebounds, U-shaped rope exit, no rope rolling, no need to worry about the dog tangling the rope, very suitable for with the dog. Simple one-button pause, lock control, you can easily control with your thumb to prevent the dog from sprinting, quickly control the distance between you and your dog, and ensure safety. Lightweight and adjustable using high-density and strong straps, suitable for dogs or other animals weighing less than 110 lbs (about 49.9 kg), the rope can be extended to 16 feet / 5 meters, the distance can be controlled freely, light weight, and easy to carry Humanized Aesthetic Design - Soft rubber curved handle, ergonomic design, non-slip and comfortable, so you wont feel discomfort when walking the dog.