SOUNDPEATS Active Noise Cancelling Headphones Wireless Over Ear Bluetooth Headphones 40H Playtime, Comfortable Fit, Clear Calls Hi-Res Audio Certified Custom oversized 40 mm dynamic drivers produce Hi-Res Audioa certification only awarded to audio devices capable of producing exceptional sound.A6 active noise cancelling headphones reproduce your music with extended high frequencies that reach up to 40 kHz for extraordinary clarity and detail. Reduce Ambient Noises By Up to 90% Our team of engineers conducted more than 100,000 tests in real-life scenarios to fine-tune A6s 4 built-in ANC microphones and digital active noise cancellation algorithm. As a result, the hybrid active noise cancellation can detect and cancel out a wider range of low and mid-frequency noises such as cars and airplane engines. 100% Stronger Bass Our exclusive BassUp technology conducts real-time analysis of the low frequencies to instantly strengthen the bass output. Double press the play button when listening to bass-heavy genres like EDM and hip-hop for an amplified listening experience. 40-Hour Playtime Up to 28 hours of non-stop playtime in wireless active noise cancellation mode (at 60% volume) is extended to an enormous 40 hours in standard music mode. And when youre in a rush, charge A6 active noise cancelling headphones for 5 minutes and get 4 hours of listening. Universal Comfort Memory foam earcups gently mold around your ears, while the headbands rotating joints automatically adjust the angle of the earcups to fit the shape of your head. This ensures that A6 active noise cancelling headphones deliver maximum comfort and a secure seal.