This is the first Yamaha Baritone to feature a 3-valve compensating system, and is another example of how advanced Yamaha technology and ideas come together to deliver the sound and playability artists desire. While retaining the traditional Baritone configuration, the YBH-831 includes refinements that are invisible to the eye but make a significant difference in performance.
Material: Yellow brass, Finish: Silver-plated

 

A Yamaha wind instrument is already ideal
companions on your musical journey. Now you can yours
protect the musical instrument more by extending the warranty to five years, completely free of charge if you register within 6 months of purchase. At the same time, you will get 3 months access to the premium account of the Tomplay application.
Just visit the website and follow the three simple steps described.

https://uk.yamaha.com/en/support/warranty/winds-extended-warranty.html