Check the listing for details. Black Walnut Thumb Piano Professional Playing Portable 17/21 Key Kalimba. Condition: New. Listed at 75.20 USD. 1. Packing List: [1] Kalimba [2]Italian piano bag [3] Pickups [4] Tuning hammer [5] English score [6] Syllabic stickers 2. Wood: North American black walnut. [1]Black walnut solid wood, using American natural black walnut as a generator, made of all flat plates, selected wood for more than 10 years. [2] The "tiger grain wood" in the natural black walnut of the United States is selected as the generator, the texture is natural and gorgeous, the structure is fine and uniform, it has strong acoustic plasticity, the timbre is richer and more transparent, the treble sustain is longer, and the performance is more flexible. [3] All printed with tree rings, the sound will be stronger and richer. Combined with vocal music theory, natural gorgeous textures, fine and uniform construction and robust acoustic plastic, [4] North American black walnut, as an excellent emitter, has excellent acoustic plasticity, bright and full timbre, excellent sustain performance, so that the performance has rich expressiveness. 3.17/24 key Kalimba The ore metal piano keyboard is made of ore metal, which is tougher, and the key design can reduce the pain of finger playing for a long time, which is more suitable for performance.