Philips 4000 Series Gaming Headset TAG4106BK/00 On-Ear, Built-in microphone, Black, Wired, 50 mm drivers, closed-back, tuned for gaming; Detachable unidirectional noise-cancelling microphone; DTS Headphone: X 2.0 technology features 7.1 surround sound; In-line controller helps you to quickly adjust the functions