GB-500 General Aviation HeadsetGB-500 headsets feature high-efficiency ultra-light speakers, high noise attenuation, and light weight.The noise-canceling electret microphone filters out background noise. Powerful speakers deliver loud-and-clear speech. A volume control mounted on the ear dome precisely adjusts the sound level. The high-impact earcups and acoustic foam ear seals deliver a 24-decibel noise reduction rating.Headsets include a fixed general aviation cord, foam microphone wind muff, and comfortable 100% cotton ear covers.