Color:Transparent.Material:Acrylic, Stainless Steel, Wood.Size:13.5x 15x 2.5cm/5.3x5.9x1inch.Keys: 17 keys.Tonality: Standard C tune.Tune with hammerHigh pitch adjustment: Use a small hammer,keep the key closed to sound hole.Low pitch adjustment: Use a small hammer,keep the key away from sound hole.-Standard 17 keys: 1(D), 2(B), 3(G), 4(E), 5(C5), 6(A), 7(F), 8(D), 9(C4), 10(E), 11(G), 12(B), 13(D), 14(F), 15(A), 16(C6), 17(E), international standard C tune.Without music basis, you just need move your thumb to get the wonderful music that delights your day long. A simple operation can be learned in a minute. Suitable to cultivate musical talent for everyone, children, youth, adults, novice, etc.The best instrument for performance, recording, family, outdoor, school, travelling, party, and relaxation. Take your 17 Key Thumb Piano and start your show.Package Included:1* 17-key thumb piano，1* Tuning HammerOnly the above package content, other products are not included.Note: Light shooting 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.