ptopOVLENG Q5 USB Stereo Headphone Gaming Headset Earphone with Microphone for PC LaptopFeatures:  1. USB headphone with Microphone and Volume Control.  2. Adjustable headband, wear comfortable.  3. Remarkable active noise reduction function, effectively isolate noise and enjoy details of your favorite music.  4. High quality headphone for clear voice.  5. Soft cushion earplugs for maximum comfort.  Specifications:  Model: OV-Q5  Impedance: 32 ohms  Speaker Diameter: 40mm  Color: Blue & Black  Sensitivity: 108dB ± 2Db   Frequency Response: 20Hz-20, 000Hz  Max. Input Power: 100mW  Cord Length: Approx. 2.0m  Plugs Type: USB 2.0NewWarranty: 30 Days