Hands-on learning project exploring the engineering and science behind sound. Enjoy building a working set of headphones. Best for ages 12 and up. NEW IN BOX From KiwiCo website: “Wire up a pair of headphones and jam to your favorite music! Build the headband, rig up the speaker drivers, and experiment with stereo sound. Explore how speakers and other electroacoustic transducers turn electricity into sound, then learn about the engineering history that made modern headsets possible.”