Califone E3USB Multimedia Ear Bud With USB Plug - Stereo - USB - Wired - 16 Ohm - 12 Hz - 22 kHz - Earbud - Binaural - In-ear - 3.90 ft Cable - Black

First earbuds with 1-year warranty (including use in schools) Includes one "medium" and one "small" pair of replaceable ear covers to fit smaller ears Noise-reducing ear covers help decrease external ambient sounds to help keep students more on task Inline volume control Tangle-proof 3.9ft straight cord with 3.5mm plug ideal for use with tablets and smartphones. Rugged ABS plastic resists shattering for safety