• Product Type : Headset with Microphone, Connection Type : Wireless, Usage : Headband, Connection Input : USB, Sound Output : 20Hz ~ 20 kHz, Impedance : 39 Ohm (passive) / 5000 Ohm (active), Sensitivity : 87.5 dB SPL/mW, Frequency Response : Headphone: 20Hz - 20kHz / Microphone: 100Hz - 10kHz, Range : Up to 20 meters, Speaker Diameter : 40 mm, Warranty : 24 Months, Description : DTS Headphone:X 2.0,