IN NOISE WE ESCAPE - BOTH WIRELESS & WIRED: Professional Active Noise Cancelling Technology for travel, work, study and so on. It also can quells airplane cabin noise, city traffic or a busy office, makes you focus on what you want to hear or do, enjoy your music, movies and videos. TRULY AUTHENTIC SOUND: Hear music that stays true to the original recording with High-Resolution Audio. E7B headphone include a powerful 1.57" driver with Liquid Crystal Polymer (LCP) diaphragm for handling heavy beats, and can reproduce a full range of frequencies up to 40 kHz. Reducing distortion and allows you to enjoy all the subtleties in your music. LIGHTWEIGHT. COMFORT AND PERFECT FIT: The Memory-protein ear cushion simulate human skin texture, ensuring lasting comfort. The stainless steel slider and softly padded headband allows you to find the perfect fit without constraint and provide excellent durability.