28dBin-Depth ANC Wear it to stay quiet Noise cancellation against 25km/h wind speed With professional noise cancellation technology, these headphones use hydrodynamics to reduce the noise created by the wind hitting the microphones, so you can enjoy crystal clear calls even outdoors. Quadruple ENC microphone for Crystal Clear Calling Packed with arrays that combine 4 high-sensitivity microphones and ENC algorithm, these headphones can filter out most environmental noise, so you can enjoy crystal-clear calls. 10mm bio-diaphragm dynamic driver Uncover the sound of live performances Thanks to the bio-diaphragm driver, the QCYT13 ANC2 delivers clear vocals and rich bass. The copper-clad aluminum wire (CCAW) further enhances the mid-highs, so these headphones can handle a variety of music genres. Transparency mode Stay connected to the world Want to interact with your world? Now you can turn on transparency mode instead of taking off the headphones to have a conversation or be aware of your surroundings. Multiple device connection Switch audio between devices The QCYT13ANC2 can connect to two devices at the same time, with one touch switching the audio output between them. Double U-shaped back cavity Comfortable fit These headphones have a larger curve to fit you better and not hurt when worn for a long time. Ear-tip antibacterial rate 99.9% Stay safe with less bacteria With a 99.9% antibacterial rate, the Eartips can protect your hearing aids from bacteria. 30-hour battery life Listen all day 30-hour total battery life with ANC Off and 7 hours of playback on a single charge. 22 hours with ANC On and 5.5 hours of playback on a single charge. Modern Bluetooth 5.3 Stabler and faster connection Delay 0.068 seconds. Lip-sync audio performance