NEW KiwiCo. Kiwi Co. Stereo Headphones DIY Science Kit STEM Craft Learning kit

NEW KiwiCo. Kiwi Co. Stereo Headphones DIY Science Kit STEM Craft Learning Kit Engineering Topics explored: stereo sound, electromagnetism, energy, engineering Build your own working headphones, explore how speakers and other electroacoustic transducers turn electricity into sound. New - Sealed package Comes from a pet-free and smoke-free home. Trusted Seller = Buy with confidence. Interested in more than 1 item? Bundle and save $$$ on shipping.