SADES A90 Pilot Professional 7.1 USB Surround Sound PC Stereo Gaming Headphones with Retractable Microphone Volume Control Noise Reduction Six Colors Breathing Lights (Army Green) SADES high-performance decoder chip,USB 7.1 simulated surround sound.USB Interface comes with a sound card, can be used althought computer sound card broken Camouflage cellular breathing lights with six color transforming , military van! Full metal aerospace craft with super effect of sound insulation. Multi-joint mechanical microphone can rotate 360 degrees, free disassembly. Earmuffs used with the new second-generation skin-friendly material, reduce heat sweat, more suitable for long wear. Using unidirectional microphone, effectively shielding noise and echo.