RCA HPNC200 Noise-Canceling Headphones 30mm driversFrequency response: 20Hz-20kHzActive noise control circuit reduces outside noise up to 12dBLightweight foldable headbandSensitivity: 113dB +/- 3dB, maximum input power: 120mW, impedance: 32 ohms1.2m cordIncludes airline adapter and travel pouch