Feature:1. Silicone Roll Up Electronic Piano: Built in high fidelity stereo speaker provides excellent sound quality. It helps develop kids' interests in playing piano.2. Multifunction Keyboard: With 16 kinds of tone, 6 preset demos, supports recording, sustain function, supports play, stop, volume adjustment.3. Silent Playing and Wide Compatibility: Headphone jack allows you to play piano silently without disturbing others. It can be connected to external speaker, tablet, etc. to realize musical creation.4. Dual Power Supply Methods: Powered by 3 AAA batteries (not included) or external USB cable, suitable for both home and outdoor activities such as camping, picnic, etc.5. Foldable and Portable: It's soft and flexible, and can be rolled up when not in use, which is space saving, lightweight and portable to carry in backpack.Specification:Specifications:Keys: 61Color: Black and WhiteMaterial: SiliconeTone: 16 KindsDemo: 6 SongsVolume Control: YesRecording Function: YesSustain Function: YesPower Supply: 3 * 1.5V AAA Battery(Not included) or External USB CableAuto Shutdown: about 3min.Package List:1 * Hand Roll Piano1 * USB CableNote:1. Please keep it unfolded and flat when using it.2. Color and size may be slightly different due to manual measurement and different light conditions. Thanks for understanding.