I am a physical education teacher and was looking for a new pipe. The whistle is good in itself. Small, looks nice and is really loud (a band is attending). I needed one for school sport, that is for the hall. Of this I advise. Students kept her ears because the sound that came out of the pipe, was very flashy. I do not use them because I can not do that to the students. Sounds like you out there, so far I could not test.
