KEENION KDM-906 Stereo Headphone w/ Volume Control / Microphone - White + Grey
Headphone Drive unit:40 mm; Frequency range:20-20.000 Hz; Impedance:40 ohm; Sensitivity: 116dB; Cable: length: 2.1m; Jack: 3.5 mm; Microphones Sensitivity: -52dB; Output impendance: 2Kohm; Frequency Range: 75~16.000 Hz