New David Clark DC One-XM Active Noise Cancelling Bluetooth Aviation Headset. This item has been opened from its original packaging but has not been worn nor used. The headset is in perfect condition and also comes with a low to high impedance connector.If you have any questions feel free to contact me. The item "New David Clark DC One-XM Active Noise Cancelling Bluetooth Aviation Headset" is in sale since Saturday, November 27, 2021. This item is in the category "eBay Motors\Parts & Accessories\Aviation Parts & Accessories\Pilot Gear". The seller is "clatta1992" and is located in Kansas City, Missouri. This item can be shipped worldwide.