Disney Doc McStuffins Mic and Amp by First Act - DM428 Stand up and sing! With this mic and amp, you can make music wherever you go! Adjustable height mic stand. MP3 input lets you rock out to your favorite songs. Adjustable volume control. MP3 player not included Sized just right for the budding rock star Includes volume controls and MP3 input jack 4 AA Batteries Required (not included)