Utopia Ceramic Ocarina Dark & Lighter Sea Blue Color - Dual (2) Voicing Hole Alto C Key / total of 3 Octave Chromatic Range Ceramic Ocarina - High temperature Kiln Treated good Hardness Endurability Ceramic ocarina (High Kiln temperature controlled treatment) Dual (2) Voicing Hole w. up to 3 octave range playing -- Alto C Key Hardened treated process Beautiful sounding, for professional players or person who want challenging this 3 octave for higher notes. Please view the pictures for detail