The ATH-ANC1 QuietPoint® headphones deliver natural sound and luxurious silence in a highly compact on-ear design. The fold-flat headphones incorporate Audio-Technica's acclaimed active noise-cancelling technology to block out up to 85% of outside noise, while delivering clear, detailed and natural sound. The active noise-cancelling circuitry is located in a handy external module attached to its connecting cord, for extremely lightweight on-ear wear. Although compact, the headphones deliver powerful, immersive sound, thanks to their precision high-efficiency full-range drivers and premium internal components. They're ideal for use with the Apple® iPod®, iPhone™ and iPod touch®, portable music players, computers, in-flight entertainment systems and many other devices. The headphones also work when the noise-cancelling function is turned off, and operate in passive mode without batteries. <br/>