Super Star Princess Children's Toy Stand Up Microphone Play Set w/ Built In MP3 Player, Speaker, Adjustable Height Super Star Princess Children's Toy Stand Up Microphone Play Set Built In MP3 Jack and Speaker! Plug In your MP3 Player, Phone, etc. to Play and Sing Along to your Own Tunes! Working Microphone and Speaker with Volume Control Knob! Adjustable Height: 40" - 56" Tall Requires 4 AA Batteries to run (not included)