88 keys portable roll up piano, convenient storage and easy carrying. Silicon keyboard with thickened design, more real and more comfortable feeling. Features 14 demo songs, 128 kinds of rhythms, 128 kinds of tones. Supports recording, programming, playback, tutorial, sustain and vibrato functions. Piano/ drum kit functions, master volume and tempo control keys. With LED display showing the relevant parameter information. With built-in speaker and headphone jack for connecting earphone or external speaker. With USB MIDI output and sustain pedal interfaces. Dual power supply: built-in 1100mA li-ion battery or USB 5V power adapter. Color: Black + White Material: Silicon + Plastic Keyboard: 88 keys Tone: 128 Rhythm: 128 Demonstration songs: 14 Power Supply: Built-in 1100mA Li-ion Battery or USB 5V Power Adapter Main body size: 23 * 9.5 * 2.5cm / 9.1 * 3.7 * 1in Keyboard size: 125 * 16 * 1cm/ 49.2 * 6.3 * 0.4in Product Weight: 1251g / 2.8lb Package Size: 28.5 * 23 * 9.5cm / 11.2 * 9.1 * 3.7in Package Weight: 1730g / 3.8lb Package List: 1 * Roll Up Piano 1 * Pedal 1 * USB Cable 1 * Power Adapter 1 * User Manual(English)