Edifier K800 Gaming Earphone and Mic, USB Computer Headset, Independent External Sound Card, noise Cancelling Microphone Designed for online education with an Adjustable microphone The large black dynamic driver wire delivering crystal-clear sounds Independent external sound card for crystal clear calls Shielded wires with large magnetic rings for less interfered online calls High-sensitivity noise cancelling microphone rotates 120 degrees for clear voice pick up Adaptable headband, perfect for almost every user to wear Exclusive stylish earcups for optimum comfort wearing Specifications: Frequency Response : 20Hz-20KHz Microphone direction : Single point Connector : USB-A plug Cable Length : 2.8m Impedance : 32Ω Sensitivity : -42dB+/-3dB Sound Pressure Level : 91+/-3dB Inner Carton 177 x 79 x 216mm (LxWxH), 0.05 kg (gross weight)