Sony MDRZX110NC Noise Cancelling Headphones, Black

30mm Neodymium Driver. 110 dB/mW – Power off, 115 dB/mW – Power on

Frequency response:10 22,000 Hz

Over ear, Noise isolating Headphones. Connectivity Technology: Wired

Up To 80 Hours Of Battery Life

Impedance (Ohm) Power ON 220 ohm, OFF 45 ohm (at 1 kHz).Cord Length:3.94 ft