Acer PREDATOR Galea 350 (NP.HDS11.00C) Circumaural - 32 Ohm - 20 Hz to 20 kHz - 1.20 m Cable - Noise Cancelling Microphone - Mini-phone, USB Impedance - 32 Ohm Sound Pressure Level - 116 dB Minimum Frequency Response - 20 Hz Maximum Frequency Response - 20 kHz Host Interface - Mini-phone (3.5mm) , USB Colour - Black Form Factor - Circumaural Weight (Approximate) - 362 g Height - 19.8 cm Width -17.5 cm Depth- 8.6 cm Microphone Technolog - Noise Cancelling