TEMPEST ENGLISH HORN FULL CONSERVATORY SIDE F, F Resonace Key, 3rd Octave Key, Low B-C#, D#-E, G#-A trill Mechanisms, BEAUTIFUL SOUND SUPERB SETUP 5-YEAR WARRNATY Full Conservatory English Horn Low B-C#, D#-E, G#-A, and Ab-Bb Trill Mechanisms Side F Key, F Resonance Key, 3rd Octave Key 2 Bocals 5-Year Warranty