Brio Brass Instrument Training Device

This is the Brio brass instrument training device.
I used it a few times after purchasing it, but I'm selling it because I no longer use it.
I have disinfected it with alcohol, but since it has been handled by a person, please refrain from purchasing if you are concerned.
It will be shipped in simple packaging, placed in the case it came in.

Here is a description of the product.

Brio was created to train the muscles around the mouth for creating a clean embouchure when playing a brass instrument, and to correct embouchure. It has a hole in the center, allowing you to blow air into it, so in addition to muscle training, you can also practice diaphragmatic breathing. It is recommended for those who have struggled with embouchure stability or for those who are just starting to play a brass instrument!!

Main functions of Brio
■ You can blow air into it just like when playing an instrument, and train the muscles around your mouth.
■ You will learn which muscles are necessary for playing an instrument.
■ Simply put it in your mouth! It doesn't make a sound, so you can practice anytime, anywhere without worrying about the time or place.
Also, you can use Brio by inserting it into a mouthpiece. Before warming up, insert Brio into the mouthpiece and blow air firmly, and it will stabilize when you place the mouthpiece in your mouth.