Shure earphone, Shure in ear earphone, E2C, E3C, E4C  Shure earphone, Shure in ear earphone, E2C, E3C, E4C Detail of Product 1. Ideal ear buds for use with portable MP3, CD, MD, DVD players and many other portable devices with  3.5mm headphone sockets  2. Soft silicone-rubber ear adapters in three different sizes are included to ensure a perfect fit, high wearing  comfort and an excellent attenuation of ambient noise. 3. In-ear, sound-isolating design, offer powerful, bass-driven stereo performance.  4. Designed in a stylish silver finish, the ear buds include a 3.5mm L-shaped plug and 21-inch asymmetrical  cable