Sennheiser HME 100 Provides excellent passive attenuation for the cockpits of helicopters, propeller and turboprop aircraft More info >>

Sennheiser HMEC 350 Featuring NoiseGard active noise compensation and excellent passive attenuation More info >>

Sennheiser HMEC 450 NoiseGardâ„¢ active noise compensation for use in helicopters, propeller and turbo-prop aircraft. More info >>