active noise-canceling technology to reduce distracting external sounds.

3 distinct noise-canceling modes: airplane, bus/train, and office.

built-in rechargeable battery for up to 20 hours of listening.

includes USB charging adapter for internal battery.

in-line power button.

noise-cancelation must be activated for music playback.

3 pairs of noise isolation ear tips for optimum comfort and sound quality.

60" oxygen-free copper cable with gold-plated stereo mini plug.

cord adjustment slider and clip for the best fit.

includes adapter for airline systems.

carrying case included.

frequency response: 5-20,000 Hz

sensitivity: 106 dB

impedance: 820 ohms

weight: 22 oz.