About this item: Noise-canceling wireless headphones – The perfect balance of quiet, comfort, and sound. Bose uses tiny mics to measure, compare, and react to outside noise, canceling it with opposite signals. High-fidelity audio – The TriPort acoustic architecture offers depth and fullness. Volume-optimized Active EQ maintains balanced performance at any volume, so bass stays consistent when turned down and the music remains clear when turned up. Quiet and Aware Modes – Choose Quiet Mode for full noise canceling, or Aware Mode to bring the outside into the around-ear headphones and hear your environment and your music at the same time. Personalize your audio. Adjustable EQ allows you to set the bass, mid-range, and treble levels to your personal preferences or select one of several preset options. Up to 24 hours battery life – Enjoy 24 hours of battery life from a single charge. A quick 15-minute charge offers 3 hours when you’re on the go, or plug in the included audio cable to lis