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. Spec:Material: SiliconeInterface: MIDI interfaceColor: Black and WhiteSize: 91cm x 16.5cm / 35.8 x 6.5inchPackage Weight: 1287gQuantity: 1pcPackage included:1 x Roll up Piano1 x Power Adapter1 x English ManualNote: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.