Audio Hi-Fi, Extra Bass System (XBS) ErgoFit Plus Design for …

Extra Bass System (XBS) ErgoFit Plus Design for ultimate comfort and fit 3 pairs of soft earpads included(S/M/L) Driver Unit: 8.8mm Impedance: 16 ? Sensitivity: 95 dB/mW (at 1k Hz) Frequency Response: 20 Hz – 20 kHz Cord length: 1.2m