Original David Clark M-4 microphone muff or wind screen. Microphone and O-ring assembly ensure secure positioning over the microphone and provide clear, crisp voice transmission. Foam microphone protectors help remove unwanted, ambient sounds that are typically picked up by uncovered microphones. The foam prevents the condenser from picking up the sound of air moving across the mic. This helps eliminate a breathing or breathy sound, while also reducing clicks, pops and hiss. 

Fits all M-4 mics and the H10-40 Series headsets.