Now iPhone/iPod users can enjoy total control over their music, thanks to the Sony MDREX38iP headphones. Built with 9mm neodymium driver unit, these Sony in-ear headphones deliver rich, intense and deep bass. The 100dB sensitivity in these Sony headphones is capable of producing louder sound for power-packed music listening experience. A volume control on these Sony in-ear headphones lets you instantly increase/decrease the volume without even touching your iPod. With noise isolation of up to 90%, these Sony headphones effectively reduce unwanted surrounding noise letting you to enjoy a crisp and clear audio. The Sony MDREX38iP includes a 47.24-inch cord along with a cord adjuster that allows you to adjust its length for your comfort.