SmithOutlet 500 Pack in-Ear Bulk Earphones in Silver One case of 500 Stereo Earbud Headphones Each Earphone individually packaged and sealed 3.5 MM Plug works with iPods, iPhones, iPads, Chromebooks, Tablets, Computers, CD Players, Fitness and Audio Equipment Great for Classroom Testing, Students, Schools, Hospitals, Hotels, Gyms and more Color: Silver