1.Musical Piano:The 88 keys electronic piano keyboard built-in 128 kinds of tone,128 kinds of rhythm,20 demonstration . Designed according to real piano 1:1,it's an Perfect gift and adult for budding pianist. 2.Multi-Function:The music keyboard has built-in speaker and multi-function interface,microphone,audio input function,supports MIDI line and computer connection, and also supports MP3 player,Bluetooth function,which can meet your more needs. 3.Portable Piano:The roll-up piano is made of high-quality environmentally friendly plastic material, lightweight and rollable design makes it easy to carry and enjoy playing anytime and anywhere. 4.Sound Insulation:Built-in microphone can provent sound released by wearing earphones,so you can play the piano alone even in ,never care about disturbing your family and neighbors,providing you with personal performance time.(Product does not contain headphones). 5.Musical Drum:Built-in drum simulation function,using super-real analog sound technology,switch drum status can achieve the function of analog drum,so you just pay one piano and two musical instruments. Power input: DC5V or 1000mA Output power: 500MW Size: 138x22cm or 54.33x8.66inch Material:Silicone and ABS colour:Black and 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 in the a little different from the real thing. The measurement allowed error is 1-3cm.