Zone Wired Earbuds UC, Graphite Studio-quality audio is enhanced by PET+PU driver material for clear sound with less distortion while neodymium magnets increase loudness. Create your zone for professional sounding calls and music. Enjoy plug-and-play simplicity and reliability every time. Three sizes of eargels for you to choose the perfect fit for each ear to optimize acoustic performance and noise isolation. LED indicators provide at-a-glance confirmation of key functions.