[Top Material] : Kalimba 21 keys is handcrafted with high-quality material and ore steel bars.hand-polished and curved edges make the finger thumb piano feel smoother, lighter and , sound balanced. [Embossed Notes & Hand-Rest Curve DesIgn] : The names of the notes are engraved on the kalimba thumb piano 21 Keys, for ease of mastery.Hand-rest Curve Design is to the correct angle ergonomically.It is thumb piano for adults . [Perfect Tone]: Each 21 key kalimba has been debugged dozens of times by professional to that the resonance of the marimba instrument is strong, and the sound is fuller. You just move your thumb to get the wonderful music . [Widely Used]: Kalimba thumb piano is simple enough for novices to begin playing right away which makes kalimba cool gifts for music lovers.Kalimba is also the unusual gifts for performances, families, outdoors, schools, parties and relaxation.Suitable for beginners,adults, kids, and professionals.Kalimba thumb piano 21 keys Colour:Brown Material:solid wood + ore metal Size: 13 x 18 x 3.3cm Package Contents: 1 x Kalimba 21 keys 1 x instructions 1 x cloth bag 1 x tuning hammer 1 x tuning stickers 1 x finger protectors 1 x cleaning fabric 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.