Note:It needs to be tiled when practicing.    Specifications: Item Name:61-key hand-rolled piano with external sound;  Size:About 100x22.5cm;  Speaker:Built-in stereo speaker, can be used as audio;  Tones:16;  Material:Silicone;  Function:recording, playback, start/stop function;  Power supply mode:USB power supply, dry battery power supply;  Connected devices:Support external speakers, headphones, tablets;  Applicable Age:All ages;  Product Color:Black;  Keyboard:61 standard keys;  Demonstration songs:6;    Precautions: 1. When the Flexible Piano is not in use for a long time, please remove the battery.  2. Please use the AC transformer recommended by our company. Use of other transformer may cause malfunctions.  3. Do not change the position of the keyboard during use. The keyboard cannot function normally if it is placed on a concave-convex surface.  4. Please avoid sharp hard corners or sharp tools on the keyboard surface to prevent the keyboard from being damaged by cracks and failing to function normally.  5. When you want to roll up the hand-rolled piano soft keyboard after use, do not roll it too tight.    Package Included: 1 x Hand Roll Piano;  1 x Usb Charging Cable;  1 x Manual