Feature: 1. 88 keys Piano with Midi interface. 2. Has 23 demonstration songs, 100 kinds of rhythm, 128 kinds of tones and 12-stage volume adjustable. 3. Built in louder speaker. 4. Also with earphone jack, can connect with external speaker. 5. LED digital display. 6. 88 keys Piano with Midi interface 7. Built in louder speaker 8. Also with earphone jack, can connect with external speaker 9. LED digital display Specification: Features: 88 keys Piano with Midi interface. Has 23 demonstration songs, 100 kinds of rhythm, 128 kinds of tones and 12-stage volume adjustable. Built in louder speaker. Also with earphone jack, can connect with external speaker. LED digital display. Can be rolled up for easy storage and carrying around. Specifications: Keyboard model: 88 keys Tone: 128 Rhythm: 100 Demonstration songs: 23 Powered by: 4 * AAA batteries(not included) or DC 5V Material: Silicon Item size: Main body: 9 * 23.5 * 2.7cm/ 3.54 * 9.25 * 1.06in(L * W * D) Keyboard: 133 * 14.2 * 0.6cm/ 52.36 * 5.59 * 0.24in (L * W * D) Item weight: 1020g/ 2.249Lb Package size: 34 * 23.5 * 6.5cm/ 13.39 * 9.25 * 2.56in Package weight: 1480g/ 2.363Lb Package list: 1 * 88keys Piano 1 * Power Adapter 1 * Foot Pedal 1 * User manual Package List: 1 * 88keys Piano 1 * Power Adapter 1 * Foot Pedal 1 * User manual