we designed our Wireless Headphones with the aptX HD Sound Codec for a truly immersive experience. Enjoy listening to the finer details of your music or movies in high definition sound with powerful bass and experience the subtle nuances of better than CD quality. Hybrid Active Noise Cancellation detects and virtually eliminates background noise such as automobile traffic and airplane engines by up to 30dB to allow you to focus on whats important. Turn the ANC Button off when you need to hear what is happing around you, while still listening to music or movies. Includes an adapter for the airplane, so you can enjoy full stereo when traveling.