Sony Lightweight in Ear Deep Bass Stereo Earbud Headphones (Black) Sony Headphones high-quality audio in a lightweight and compact design 9mm Neodymium Drivers - 9mm dynamic drivers with neodymium magnets deliver crisp, realistic audio with a wide frequency response Multiple Eartip Sizes - 3 sizes of soft interchangeable eartips are included, allowing you to find the best fit for comfort and noise isolation 3.5mm Plug - The angled 3.5mm plug provides strain relief and compatibility with a variety of MP3 players, CD players, laptops, and more Compact and Lightweight - The lightweight and compact design is ideal for on-the-go lifestyles