The my music world modern-style keyboard is a true classic. This keyboard is 21. 25 inches long and has 37 keys to play along on. Complete with 8 rhythms, 8 demo songs, volume control, there is everything you need to make great music. The my music world keyboard also has recording and playback functionality, so you can enjoy your masterpieces time and time again!  Number of Batteries: 3 Included: 3 Aa Battery(ies) Learning Skill: Music Power Source: Battery (included) Recommended Ages: 4 Years And Up Measurements: 22 Length/Inches Base Material: 100% Plastic Battery Size: Aa Care: Wipe Clean Country of Origin: Imported p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 15.0px Calibri; -webkit-text-stroke: #000000} span.s1 {font-kerning: none} WARNING: CHOKING HAZARD – small parts. Not for children under 3 years.