The Aeroshop Pilot ANR headset, at less than 200 grams, is one of the lightest and most comfortable ANR headsets on the market today. Passive noise attenuation of 22 dB and active noise attenuation of an additional 24 dB. Premium Electret noise cancelling microphone and high fidelity speakers. Comfortable leather ear seals. Powered by two AA batteries with a battery life of up to 48 hours.