Very good, I find the different frequencies and colors of ACME dog whistle. This pipe has the frequency 211.5 and sounds to the human ear still pleasant to without being flashy. But can be heard over long distances.
In addition, the pipe has the advantage that it sounds more neutral for the dog. Quite in contrast to verbal commands (own mood)
The band could be something valent, but can always be replaced by a private. Cleaning easily under warm water.
