Complete with 61 keys, 255 timbres, 255 rhythms, 24 demo songs, and 8 types of percussion, and 8 polyphony options. PERFECT FOR BEGINNERS: LED display, built-in recorder with playback, and 3 teaching modes (One-Key, Follow, and Ensemble); perfect for novice to advanced players to practice. ADJUSTABLE SOUND: Built-in rhythm programming and metronome with 4 different time signatures helps kids find the perfect sound and create the ultimate music piece. INTERACTIVE PLAY: Plug in a USB drive up to 32GB and use the included microphone so kids can play along and jam out to their favorite tunes. PLAY AT HOME: Play comfortably in your living room; keyboard stand and padded stool are both adjustable for musicians to play in comfort. Headphones cancel outside noise to let you play without interruption. DIMENSIONS: Overall Dimensions: 32.5 inch(L) x 15.25 inch(W) x 33.5-36.5 inch(H) (with music stand). Overall Dimensions: 32.5 inch(L) x 15.25 inch(W) x 26.25-29.25 inch(H) (without music stand). Keyboard: 32.5 inch(L) x 10.25 inch(W) x 9.5 inch(H) (with music stand). Keyboard: 32.5 inch(L) x 10.25 inch(W) x 2.25 inch(H) (without music stand). Stand: 31 inch(L) x 15.25 inch(W) x 24-27 inch(H). Stool: 15.25 inch(L) x 12 inch(W) x 19 inch(H). Seat: 15.25 inch(L) x 11.5 inch(W). Weight: 14.1 lbs. SPECIFICATIONS: Material: Plastic. Power: Plug-in or Battery. Plug-in Type: AC Adaptor. Battery Type: DC 9V. Number of Batteries: (6) AA. Certifications: FCC, UL, ASTM. Recommended for ages: 3+ years. Includes: Keyboard, Adaptor, Headphones, Microphone, Stool, Music stand. Assembly required (with instructions).