I received this a week ago but I was waiting for harness that matches it which I bought on the same day but just arrived yesterday. Very good for small dogs because the leash is thinner,that's just my opinion, I Don't have a big dog so don't take my word for it. I have a small dog who sometimes go crazy when she sees a cat, I'll see what happens to the leash when my pekengese runs like crazy after a cat RGB works perfectly 2taps for the lights, then the 3rd tap is for the RGB colors❤, The reason I bought it was because of lights and the rgb, anyways the 4tap is for both light and RGB and the 5tap is for turning it off. Every function is working and easy to operate. I love it 😍 wish the leash was stronger but I still love it.