A. Musical Piano: The 88-key electronic piano keyboard has 128 kinds of tones, 128 kinds of rhythms, and 20 demonstrations. Designed in a 1:1 ratio according to a real piano, it's a great gift for budding pianists and adults. B. Multi-Function: The music keyboard has a built-in speaker, a multi-function interface, a microphone, and an audio input function. It supports MIDI line and computer connection, as well as MP3 player and Bluetooth functions, which can meet various needs. C. Portable Piano: The roll-up piano is made of environmentally friendly plastic material. Its lightweight and rollable design makes it easy to carry and allows you to enjoy playing anytime and anywhere. D. Sound Insulation: The built-in microphone can prevent sound from being released when wearing earphones. So you can play the piano alone without worrying about disturbing your family and neighbors, providing you with personal performance time. (Product does not contain headphones). E. Musical Drum: The keyboard has a built-in drum simulation function, using relatively real analog sound technology. Switching the drum status can achieve the function of analog drums. So you can get the experience of two musical instruments with one piano. Power input: DC5V/1000mA Output power: 500MW Size: 138x22cm/54.33x8.66inch Material: Silicone + ABS Colour: Black + Orange Package Contents: 1 x hand roll piano 1 x 1 x USB charging cable 1 x English manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item to be slightly different from the real thing. The measurement error is allowed to be +/- 1 - 3cm.