The Yamaha YHR-667 Professional French Horn is tuned in the key of Bb/F double, .472" bore, medium-large throat, yellow brass bell, Geyer-style wrap, nickel silver inner and outer slides, water key, lacquered brass finish. Includes case, 30C4 mouthpiece, and premium rotor oil. All Yamaha brass & wind instruments come with a limited 5-year warranty.