"Drive Unit : 40 mm Sensitivity: 105dB/nW?dB Impedance : 32 ohm Frequency response: 20 Hz-20 KHz Rated power: 100mw Power capability: 1000mw Plug type : 3.5mm stereo (Build in earcup to connect to ipod) Phone jack : 3.5mm stereo (Female) Accessories: Multimedia Connection cable with mic.