Equipped with an ANC chip, allows noise cancellation of up to 40 dB. Noise cancelling with three microphones for calls: clear calls even in noisy places. The three sound modes adapt to any environment and your needs: light mode to relax in the bar, balance mode for walks in the park, and a deeper mode for the way to work in a noisy subway. The transparent mode allows you to pay attention to what surrounds you without having to remove the headphones. Also supports voice optimization to keep frequencies clear. Thanks to the professionalism of the Xiaomi Audio Lab, the headphones allow detailed and professional acoustics, making you feel in a recording studio. The battery life of the individual headphone is approx. 7 hours. In combination with the case, it can last up to 32 hours. With an easy to use button, you can avoid wrong contacts and you can switch tracks or increase the volume, the song you hear, or many other functions.