Feature: 1. [Multi Features] The 88 key electronic piano keyboard offers 128 built in tones, 128 rhythms, and 20 demo songs, designed in a 1:1 piano layout for a real playing experience. 2. [Rich Functions] Built in speaker and multifunctional interface, microphone and sound input function. Supports MIDI cable and computer connection. Also supports MP3 player and Bluetooth function. 3. [Noiseless Practice] The built in microphone allows you to play the piano without disturbing your family and neighbors, even at midnight, providing you with individual playing time (headphone not included). 4. [Battery Simulation Function] With battery simulation function, utilizing real sound technology, the keyboard can simulate battery status, allowing you to experience two instruments with just one piano. 5. [Portable Design] Crafted from eco friendly plastic and silicone material, this flexible piano is lightweight, rollable, and easily portable, allowing you to play music anytime, anywhere with convenience. Specification: Item Type: Roll Up Piano Material: Silicone, Plastic Power Supply: 1000mAh Lithium Ion Battery (Built in), USB 5V Power Adapter Voltage: 110-240V. Package List: 1 x Roll Up Piano 1 x USB Power Cable 1 x Plug 1 x Sustain Pedal 1 x English Instruction Manual