UPSOUND Trumpet Practice Tool - Brand: UPSOUND - Included: Storage bag, instruction manual ※The outer box is for temporary storage and should be considered a bonus. This device attaches to the mouthpiece and allows you to practice buzzing with a resistance similar to that of a real instrument. I purchased it new a few years ago and used it about twice, but I no longer use it, so I am selling it. It has been stored personally, so there are some scratches and age-related dirt from use. Everything in the first photo is included. ※The third and fourth photos show the device disassembled. Please make your purchase based on the photos provided.