NGS USB gaming stereo headphones black and red. The NGS VOX600 is an ideal headset to use for gaming, but also with all VoIP (Voice-Over-IP) application like Skype, and any other interactive audio application. Outstanding sound quality with a frequency response of 20Hz-20 KHz and a 32 Ohms impedance. The NGS VOX600 features noise cancelling and amplification technology, filtering out unwanted background noises. Built-in microphone with a 4 button volume controller including volume up and down, mute and mute microphone. Powered via USB Port. Covered by a 5 years manufacturer warranty.