Headphone Speaker Unit: Φ40 mm Hybrid Diaphragm Driver Impedance: 32 ohm/1 KHz Sensitivity: 103 dB Frequency Response: 10 Hz - 22 KHz In-line Mic. Frequency Response: 75-16 KHz Sensitivity: -45 dB Cable Material: Tangle-free Cube Braided Cable Plug Type: 3.5 mm Plug (Audio/Mic.) Cable Length: 130 CM Extension Cable Length: 100 CM