Its time to upgrade from stock earbuds, and the choice is clear. Designed for women, the MX 581 is the total solution for music on the go. The MX 581was engineered for rich, full acoustics and sound great right out of the package. The integrated volume adjuster keeps you in control even when the audio player is out of reach. They, along with your iPod Nano (4G), fit in the included storage pouch. The included ear sleeves increase comfort and stability in the ear while the included clothing clip anchors the cable to a shirt.