This is a Yamaha F single horn. It is the model before the current one. The slides and rotors all move. The sound production was fine from approximately Low C to High G. As it is an F single type, it features rich harmonics, a horn-like sound, and ease of reading music. There are dents in various places, but they do not affect playability. (I forgot to take pictures, but there are dents on the mouthpiece receiver and the main tuning slide. Please be aware if this is a concern. I will upload them later.) A hard case and mouthpiece (Yamaha 32C4) are included.