HG9056 Specifications Sound: 7.1 virtual surround Frequency response: 20 Hz - 20 KHz Speaker size: 50 mm Speaker sensitivity: 110 dB ± 3 dB Microphone type: omnidirectional Microphone size: 6 x 2.7 mm Microphone sensitivity: -38 dB ± 3 dB Backlight: Rainbow Connectors: USB Cable length: 2.2 m OS support: Windows 7 or newer Feature Full audio immersion in games with 7.1 surround sound Excellent audio quality with powerful bass sounds and clear treble Rotatable microphone arm In-line remote control Soft-cushioned synthetic leather ear cups