Specification Power:DC 5V Speakers:Built-in high quality speaker system Battery:4 AA dry batteries(enables 10-12 hours playing), not included Tones:128 options Demo Songs:20 options Rhythm:100 options Features Mesh Carry Bag & Adjustable Tones, Rhythms & Demo Tracks for Play-Along Fun Soft, Flexible Keyboard Rolls Up in Seconds for Discreet Storage & Travel Convenience Nonslip Bottom Prevents Movement on the Floor as Boys & Girls Practice Great for School, Music Class, Play Date or Vacation Replicates the Sound & Feel of a ‘True’ Piano, Teaching Kids How to Read, Play & Practice Music as Young as Preschool Runs on [4] AA Batteries or DC 5V USB Cable [Included] Choose from 128 Unique Instrument Sounds, 128 Rhythm Tracks, 30 Preloaded Songs & Play Along! Includes High Quality Built-In Speaker with Record Function & Ports for Headphone Beginner to Intermediate Players Use the Cool Numerical Keypad to Program Rhythm/Key Tone/Demo Song Initiate Sustain & Vibrato, Change Tempo, Adjust Volume, Sync the Beat, Build Chords & More! Package Includes: Roll up piano Mesh Carrying Bag USB power cable Instruction Manual