Build your own headphones and listen to the music from your iPod, iPad, iPhone, a smartphone, or any music device. Kids Headphones Building Kit by Smart Lab comes with all parts to put together the light-up headphones that flash to the beat of the music your listen to. This headphones building set is a fun way for children to explore electricity, sound, technology, and science. Kids Headphones Building Kit includes stereo speakers, swivel-mount earpieces with cushions, pre-assembled PC board, multicolored LED, adjustable headband, graphic covers, headphone jack, and 16-page color illustrated instructions. This tech science toy from Educational Toys Planet requires no special tools. Requires 2 AAA (not included). Young music fans will really rock when they build their own cool headphone set!