Clear, natural sound with rich bass. Designed with a focus on audio quality, the NoiseSHIELD offers spectacular fidelity with music, movies, games, and other audio applications, as well as with phone calls. The 40 mm drivers and closed-back earcup design of the NoiseSHIELD provide impactful bass, great clarity, and extended treble for a clean, natural sound. The NoiseSHIELD Active Noise Cancelling (ANC) system isolates external noise by up to 80 percent on demand, reducing distractions at home or on the go. Annoyances such as airplane engines, bus motors, and fan noise are significantly reduced when ANC is turned on, providing a relaxed listening environment and refreshing travel experience. ANC functions for up to 32 hours on two AAA batteries (not included). The music and headset functions of the NoiseSHIELD can be used with ANC turned on or off, and even with no batteries installed. The noise canceling feature can also be enabled independently to block out ambient noise, even with no cable plugged in, allowing you to relax with music or without it. A convenient mute button allows you to participate in a conversation or hear an announcement without taking the NoiseSHIELD off. The NoiseSHIELD includes interchangeable cables: one for headset functionality with compatible smartphones and tablets, and another for audio-only use, providing maximum compatibility with all 3.5mm audio jacks including in-flight entertainment systems. Take calls and control media with compatible phones and tablets using the remote button and adjust the volume of any device conveniently with the universal volume control when using the headset cable. Comfort at home and convenience on the go- With a lightweight design, adjustable headband, articulating ear cups, and soft earpads, the NoiseSHIELD is ideal for use while traveling, in the office, or at home. The compact, folding design and protective case provide a small footprint in luggage or anywhere else you want to store your NoiseSHIELD.