Andoer 88 Key Electronic Piano Keyboard Silicon Flexible Roll Up Piano with Loud Speaker and Foot Pedal 88 keys Piano with Midi interface. Has 23 demonstration songs, 100 kinds of rhythm, 128 kinds of tones and 12-stage volume adjustable. Built in louder speaker. Also with earphone jack, can connect with external speaker. LED digital display. Can be rolled up for easy storage and carrying around.