Built-in speakers offer tremendous sound, complete with 255 Timbres, 255 rhythms, 61 keyboard percussions, and 24 demonstration songs. Stereo outputs and a headphone jack can be used to listen through external speakers or with the included headphones. Designed for beginner to intermediate-level use, this multi-function keyboard piano features 61 lighted keys, providing a traditional piano or organ feel for versatile learning and an exciting acoustic experience. Keyboard comes with a complete set of light-up keys to instruct the beginner learner. in order to follow, simplify and accelerate piano mastery.