Experience crystal clear sound with -48dB Active Noise Cancelling Headphones. With custom oversized 40 mm dynamic drivers that produce Hi-Res Audio, you'll get exceptional sound every time. Thanks to four Anc microphones and a digital active noise cancellation algorithm, effectively eliminating indoor and outdoor ambient noises, the headphones reduce ambient noise by up to 90%. Plus, they're designed with Skin-friendly, thicker Inert Sponge Padding providing all-day comfort no matter where your journey takes you!