The Philips Performance Wireless Headphones have an active noise-canceling function that you can control to match your situation. With 30 hours of playtime plus flexible quick charging, you are covered for the whole trip or your whole shift. Two levels of fast charging- rapid charge and quick charge- give you an extra 2 or 6 hours of playtime. From a playlist to a podcast, perfectly tuned neodymium acoustic drivers deliver deep bass and clear midrange frequencies. Soft ear-cup cushions cover your whole ear, creating a seal that passively isolates external noise. The headband is light, easily adjustable, and smooth so you will not get your headphones tangled in your hair.