The included 3 sizes of noise isolation ear tips, and 4 sizes of hybrid ear tips allow for a catered fit that is not only easy to wear, but also isolates desired sound while blocking out surrounding noise. Neodymium magnets is the 13.5mm dynamic drivers offer a wide, accurate frequency response to the crisp and realistic audio produced. A more affordable option than the more refined sounding MDR-EX510LP, but with the same design, fit, and accessories included.