Rca 12db Noise Cancelling Folding Headphones with Travel Pouch Airline adapter included. Eliminates external noise up to 12db. Deluxe ear cups for extended comfort. Travel pouch included. Driver size: 30mm. Active noise canceling: &lt;12db @ 300Hz. Frequency response: 20-20,000Hz. Sensitivity: 113db=3db(off) 119db=3db(on). Impedance: 32 Ohms. Plug: 3.5mm stereo plug + airline adapter.. Cord length: 5.5'/1.65m