Rugged Air RA950 Stereo General Aviation Pilot Headset with Active Noise Reduction Featuring Gel Ear Seals and Full Flex Boom Mic EM58 Noise Cancelling Microphone and Wind Block Foam Mic Muff Comfortable Leather Ear Seals and Deluxe Comfort Headband Padding Fully Adjustable Spring Steel Headband with Deep Pocket Ear Canals Dual Volume Controls Featuring Stereo Audio with Mono / Stereo Switch 39.5 dB ANR (Active Noise Reduction) @ 3000 Hz to Block Out Background Noise