RCA Noise Canceling Headphones (Discontinued by Manufacturer) 30mm drivers, 20Hz-20kHz frequency response, Active noise control circuit reduces outside noise up to 15dB, Sensitivity: 116dB (OFF) /122dB (ON), maximum input power: 120mW, impedance: 32 ohms, Lightweight foldable headband, 1.2m cord, Includes airline adapter and travel pouch