Advanced Noise Cancellation Technology: Life Q30's hybrid active noise cancellation helps you stay focused. Up to 95% of low-frequency background noise is picked up and filtered out by two noise-detecting microphones to make sure nothing interferes with your music. The Best Experience with Noise Cancellation: Choose from three different noise cancellation modes for the Life Q30: Transport reduces the noise from airplane engines, Outdoor reduces wind and traffic, and Indoor muffles background conversations in crowded offices. High-Resolution Music: The 40mm drivers in the Life Q30 allow you to hear every nuance of your favorite songs. For better clarity, the incredibly flexible silk diaphragms produce a thumping bass and a clear treble that reaches up to 40 kHz. 40-Hour Playback: When in noise-cancelling mode, the Life Q30 active noise-canceling headphones can play music for up to 40 hours. Typical