Rizatti Bronco RB31FW Diatonic Accordion - White - Key F/Bb/Eb with Padded Bag 31 Treble Buttons Key of F, Bb, Eb Padded shoulder strap included Los acordeones son manufacturados sin los tonos de bajo por que hace posible mejor escape y respiracion. Especiales para musica Nortea. The bass reed blocks have been removed for faster treble playing.