Precise closed ear headphones for accurate and pure sound. Compact and lightweight, high quality headband and soft leatherette ear pads for ultimate comfort. 40mm quality transducers. Impedance 32 ohms. Frequency response 15Hz-22Khz. Sensitivity 98dB /- 3dB. Cord length 2.5m. 3.5mm plug and 6.3mm adapter included.