Daher haben wir nicht die Möglichkeit diese Geräte in irgendeiner Weise zu testen.
eBay
Yields an overall Noise Reduction Rating of 22dB, with 29dB of attenuation at the fatiguing 1000Hz level and 37.9 at the 4000Hz level. Extra-thick, contoured gel ear seals mold softly to your head, even around eyeglass temples Bought this item at an auction brand new , never been used comes with all the diagrams and original paperwork and instructions. If more information is need I will provide.
eBay
eBay
New headphone cord kit with release certificate as pictured.
eBay
Two used David Clark H20-10 headsets with an Orvis case. Used as a backup/passenger headsets when I had my plane. One of the headsets needs a mic cover.
eBay