The Carry-On 88-Key folding piano and MIDI controller is a fun, convenient way to take and make music on the go. It offers 88 standard-size keys for real playing feel and muscle memory development, with 128 built-in sounds, 128 built-in rhythms, as well as 30 backing tracks, stereo speakers and much more. With up to 8 hours of normal playing time on a full charge, you can really enjoy playing wherever you want. When you are done, it folds up for easy storage.