Aircraft aviation headset - HD 250BT - SENNHEISER AVIATION - for pilots / wireless
Sennheiser HMEC25-KA ANR Headset
Amazon.com: Crystal Mic Pro Universal Aviation Microphone for Noise Cancelling Headphones. Transform Your Sennheiser/Sony/Bose Headphone into an ANR Pilot Headset : Electronics
SENNHEISER S1 NOISEGARD R HEADSET from Aircraft Spruce Europe