Box with music, button, encoder and RGB. That is what childer under 3 years old need :D. Box play music saved on SD card. You can switch the music with 3 top button. With encoder you can volume up and down. Box is powered with 1850 Li-ion battery. During startup, the songs that will be played and the effects are randomized. You can call the draw again by pressing the white button. The box has fallen a few times, everything still works so it's pretty durable.