Pronunciation Method:Diatonic 1. Multi-point support design at the bottom to better protect the cover plate and not easy to deform for a long time. 2. 10 holes with C adjustment. 3. Suitable for any beginner or harmonica enthusiast. 4. Size: 100x30mm. 5. Cover material: stainless steel. 6. Seat plate material: copper. 7. The gong material: silver. 8. Body material: resin.