This rolled-up piano is a very suitable gift for children. It is comfortable to use, does not hurt children's fingers, and has a rich tone, which is very suitable for children's music initiation.   Features: The 49-key rollable keys are standard keys, which can be rolled up, small in size and easy to carry.  There are function-keys on the keyboard surface, which is convenient to adjust your favorite rhythm.  8 sets of drum rhythms, one-key a tone, recording and playback function, 16-level volume control, 32-level beats-control, automatic power saving function.  Built-in 16 kinds of tones, 10 rhythms and 6 demo songs for learning and enjoying classic songs.  The sound of the built-in speaker is mellow, crisp and melodious.   Specifications: Color: black, silver (optional);  Material: silicone;  Power: 3 * AA batteries (not included);  Item size(unfold): 830 * 160mm / 32.7 * 6.3in;  Item weight: 700g / 1.5lb;  Package size: 285 * 180 * 80mm / 11.2 * 7.1 * 3.1in;  Package weight: 1000g / 2.2lb;   Packing List: 1 * Roll Up Piano