Feature:1. Support External Equipment: Hand roll piano is built in stereo speakers, support to connect speakers, MP3, microphone and external headphones, do not worry about disturbing others.2. MIDI Function: Foldable piano keyboard with MIDI function allows you to connect to various smart devices such as computers, laptops and create your own music.3. Multifunction: 88 key roll piano keyboard has 128 kinds of timbre and rhythm, 15 demonstration songs, also includes recording, editing, playback, delay, trills, teaching, chord functions, etc., to meet the needs of beginners practice.4. Rechargeable: The roll up piano has built in rechargeable 1100mah lithium battery, supports USB charging, mobile power charging, lithium battery power supply, and can play 68 hours per full charge.5. Portable and Best Gift: The digital roll up keyboard is small and light, soft body can be rolled up, easy to carry and start playing at any time. Designed for beginners, making it easy to use and effective to learn.Specification:Item Type: 88 Keys Roll Up PianoMaterial: ABS+SiliconeBattery: Built-in 1100mAh Polymer Lithium Ion BatteryKeyboard: 88 Standard Keys (Including Black Keys)Tones: 128Rhythms: 128Demo Songs: 15Display: LED Digital DisplayFunctions: Easy Recording, Editing, Playing, Sustain, Vibrato Functions, Teaching, Chord FunctionsExternal: Support External Speakers or Headphones, Can Connect External Sustain PedalPower Supply: Battery or DC5V Power Supply, Mobile ChargingMIDI: Support MIDI Output, Can Connect with Computer or Tablet.Package List:1 xRoll Up Piano 1 x USB Cable1 x Foot Pedal1 x User Manual