Audio quality: immersive, high-res sound, and powerful speaker drivers deliver the right balance of rich bass, crisp highs, and natural mid-tones for your music Active noise cancelling (ANC): switch on active noise cancelling (ANC) to minimize ambient noise while working or traveling 24-Hour streaming/ listen Longer: enjoy up to 24 hours of wireless music, movies and calls before choosing the cabled Connection or recharging.