UPSOUND Upsound (for Horn (HR))

This is a practice tool used with a mouthpiece called Upsound. I purchased it because it allows for practice with a blowing sensation closer to an actual instrument than just practicing buzzing with a mouthpiece, but I am selling it due to infrequent use.
It was washed with water after use and stored.
Although it was used infrequently, there are minor scuffs, scratches, darkening of the metal parts, and dirt. It is still usable without any issues, but please judge the condition from the images.
For this listing, it has been polished with a silver cleaner and wiped with alcohol swabs, but those who are concerned about hygiene or are sensitive should refrain from purchasing.
Also, this is for French horn.
The contents are what is shown in the images and a simple instruction manual inside the drawstring bag.

From the official website:

UPSOUND is a practice tool that allows you to practice anytime, anywhere, with the feeling of playing an actual instrument, rather than just practicing with a conventional mouthpiece.
It enables practice with a sensation similar to naturally playing an instrument, and has the effect of practicing while playing.
Furthermore, UP SOUND transmits vibrations to the grip, which are then transmitted through the hands and arms to the body, resonating internally for the player. It is effective for memorizing correct lip vibrations and smoothing airflow.

It is also excellent as a tool for learning ideal breathing techniques, allowing you to master the correct way to breathe.

It can be disassembled and washed with water after practice, ensuring hygienic use.

Concert band, orchestra, chamber music, wind instrument, practice
Breath training, mouthpiece
Horn, HORN, Hr