The H20-10XL combines portable ENC technology in a radically different, advanced comfort headset design. ENC technology provides an additional 17-22 dB noise reduction with the ENC turned on. Ideal for blocking out low frequency engine and propeller sound, the H20-10XL can be plugged into any aircraft with its portable battery-power module that provides up to 60 hours of use. The H20-10XL comes complete with attached 5' straight cable and quick release connector coil cord with dual plugs.