Hi-Res Audio: Custom oversized 40 mm dynamic drivers produce Hi-Res Audio—a certification only awarded to devices capable of producing exceptional sound. Music is reproduced with high frequencies that reach up to 40kHz for stunning clarity and detail. Reduce Ambient Noises By Up to 90%: Life Q20+ has 4 ANC microphones and a digital active noise cancellation algorithm to detect and cancel out a wider range of low and mid-frequency noises such as cars and airplane engines. Extended Playtime: Enjoy 40 hours of playtime in wireless noise cancelling mode (at 60% volume) or 60 hours’ in standard mode. Also enjoy 4 hours of listening when you charge Life Q20+ active noise cancelling headphones for just 5 minutes. Multipoint Connection: Connect Life Q20+ active noise cancelling headphones to 2 devices at once via your local Bluetooth network and seamlessly switch between them.