Battery box with mono/stereo switch and volume buttons on each ear shell for more options on your flight(no battery included). 3.5mm jack for MP3/ iPhone/ iPad/ Android Compatibility. Comfortable leather ear cushions are super soft for long time of use, making your flight experience more enjoyable. The pilot headset features an electronic electret microphone that eliminates a significant amount of ambient noise and provides clear communication. These features will ensure that you don't miss important information while you're flying. ANR aviation headset, designed for pilots, with leather ear cushions will provide an amazing 23 dB of passive noise cancellation and an additional 29 dB of active noise cancellation for a total of up to 52 dB.