Specification: Keyboard model: 88 keys Tone: 128 Rhythm: 128 Demonstration songs: 14 Material: Silicon Powered by: 1. USB 5V external power supply 2. Built-in 1100mA lithium battery Size: 138x22cm (LxW) Package Includes: 1x 88keys Roll Up Piano 1x Power Adapter 1x Foot Pedal 1x User manual Synchronization, single/finger chord functions Recording, programming, playback functions Demonstration song request, teaching function Play/stop, insert function Sustain, Vibrato functions Microphone, audio input function MIDI OUT, USB 5V power supply function Headphone/audio output interface This little keyboard comes with a ton of amazing sounds and great playing features. It can be used with 128 kinds of tone, 128 kinds of rhythm, 14 demonstration songs, making it the ideal first keyboard for aspiring musicians who are just starting out. The keyboard has a light and thin appearance design, which is concise and beautiful. You can roll it up and put it inside the included pouch for easy storage or travel with ease, and get rid of the limitation of space. It features built-in speaker and multi-functional interface, support MIDI line and computer connection, meet your various needs and achieve more creation. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.