161 keys (C3 ~ C8) standard piano, 128 tones,128 rhythm, 45 Demo songs. 2Powered by 4 x AAA batteries (not included) or external power adapter. 3Small and can be hand-carried, it can also be rolled up for easy storage in hand bag or carrying case. 4Flexible keyboard piano, suitable for children beginners, kids, family fun, music enthusiast, professional players, or people on the go. 5Digital display. Recording, programming, playback. Single-finger chords, multi-finger chords. Demonstration song. Keyboard drums. Sustain sound, tremolo function. One-button teaching function.Description: This 61 keys (C3 ~ C8) standard piano is suitable for home entertainment & common music practice. Despite its size you still get great quality sound, with 128 tones,128 rhythm, 45 Demo songs. Regardless of your age or skill level, this roll up piano makes a great gift idea.Features:61 keys (C3 ~ C8) standard piano, 128 tones,128 rhythm, 45 Demo songs. Powered by 4 x AAA batteries (not included) or external power adapter. Small and can be hand-carried, it can also be rolled up for easy storage in hand bag or carrying case. Flexible keyboard piano, suitable for children beginners, kids, family fun, music enthusiast, professional players, or people on the go. Digital display. Recording, programming, playback. Single-finger chords, multi-finger chords. Demonstration song. Keyboard drums. Sustain sound, tremolo function. One-button teaching function.Specification: Material: Silicone Interface: MIDI interface Color: Black and White Size: 91cm x 16.5cm / 35.8 x 6.5inch Package Weight: 1287g Quantity: 1pc Package included: 1 x Roll up Piano 1 x Power Adapter 1 x English Manual Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. .wang-edit-text{ font-family:'Arial'important; } .wang-edit-text table { border-top: 1px solid000; border-left: 1px solid000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid000; border-right: 1px solid000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }