Specifications Type: Headphones with Microphone Driver units 30mm Frequency Range: 20 Hz - 20 kHz Sensitivity: 105dB+/-3dB Impedance: 32ohm+/-15% Cable length: 175 cm Headphone Connector: 3.5mm Jack Stereo Microphone Connector: 3.5mm Jack Mono Blister Packaging Reference: CD-602