Rock out, then roll it up! Award winning, flexible, completely portable piano by MukikiM with 49 standard keys. Features: Multiple Keyboard Tones, Multiple Demo Songs, Echo/Sustain, Record & Playback, Built In Speaker w/auxiliary capabilities (headphones or external speaker), Powered by USB (cord included!) OR batteries, Completely portable – take it with you and play ANYWHERE! Realistic Sounds. Specifications: Keyboard Size (open): 27.75 x 5 x 1 (inches), Control Panel Size: 3.25 x 6 (inches). Rolls up into a box sized: 6.25 x 8.5 x 3.25 Materials: Silicone, plastic Batteries: 4x AAA (not included) Package Includes: 1 Piano with attached control panel/speaker 1 USB power cord (wall plug not included) 1 User Manual Notes for usage: Due to the soft silicone that the keyboard is made of, there are times when compound sounds are produced due to cross-feedback or vibrations registering on adjacent keys. This is normal for such devices and is not indicate a faulty or malfunctioning product.New 2016