Specifications: Material: Mahogany and carbon steel teeth Size: As the picture shows Pattern: butterfly Net Weight: About 1.12 pounds Level: For Beginners/Professional Tonality: C tune Number of Keys: 21 Feature: Mahogany sound is more full and balanced, the wood is hard but the weight is not heavy and the texture is fine How to tune the kalimba: Tuning steps: 1. Pluck the middle tine of the Kalimba. 2. Use the tuning hammer to tune the tine, until the note in the tuner matches the default note and the pointer directing to the center position. Note：.