The Yamaha YCL-650U is a professional model Bb clarinet that produces a consistent tone and precise intonation. The YCL650U features a grenadilla wood body with silver-plated key work. Its cylindrical bore design makes it extremely free blowing and teacher and student alike will enjoy the ease with which this clarinet tunes. The natural finish makes for a clarinet that looks as pleasing as it sounds! Complete with Yamaha 4C clarinet mouthpiece, case and Yamaha care accessories. Key of Bb. 4CM hard rubber mouthpiece. Includes CLC-30 case and mouthpiece.All Yamaha wind instruments come with a limited 5-year warranty.