Headset Sades SA-901 USB Gaming 7.1 Sound

7.1 USB sound card delivers thrilling surround sound with separately adjustable levels. Unique 4-pieces of padded headband and comfortable ear cushions guarantees hours of gaming comfort. Reinforced headband, which offers nine levels of height adjustment for the perfect fit. Unique structure with retractable Mic. Little smart in-line Remote Control for sound and Mic. SPECIFICATIONS: Loudhailer diameter: 40mm(NdFeB) Sound effect: 7.1 simulated sound channels Frequency range: 20~20.000Hz Sensitivity: 111dB +/- 3 dB at 1 khz Impedance: 32 Ohm at 1KHz Max Input power: 30mW Mic Dimension: 6.0*5.0mm Mic Sensitivity: -38dB +/- 3 dB Mic Frequency Range: 50-10KHz Mic Impedance: 2.2K at 1khz Cable length: Approx.3.0m Approximate Weight: 300g/ 0.66lbs Input Plug: USB (USB connection provides power) Physical production: driver CD