17 Key African Finger Mbira Portable Thumb Piano Musical Instrument for Children Adult Features: KOA material with natural wood grain, solid and durable enough for long time use. The thumb piano keys are made of steel bars in different length, make the sound resonance better. Easy e, just need e two thumbs play to make a sound, you can creative your won music. Small size and light weight for easy carrying and storage. Also a great educational instrument for children do training and cultivate your child's interest. Exquisite workmanship and perfect details, it's a wonderful gift for your family or friends. Specification: Condition: Material: KOA Wood + Steel Color: As the Picture Show Size: Approx. 18.5 x 14 x 5.5cm / 7.3 x 5.5 x 2.2inch Weight: Approx. 579g Package Included: 1 x Thumb Piano 1 x Tuning Hammer 1 x Cloth Bag 3 x Stickers Note: Please allow slight deviation for the color and measurement. Thanks for your understanding.