Chester Creek HP002VC Headset * Speaker Size: 40mm diameter (1.6") * Impedance: 32 Ohms, +/- 15 percent * Frequency Response: 40Hz-18kHz * Sound Pressure Level: 100 dB +/- 4dB * Rated Input Power: 20 mW * Input Power: 100 mW * Distortion: 5 percent max * Microphone: Dynamic * Volume Control: In-line; adjustable * Cord: Straight, 4" * Plug: USB * Labels: L and R * Ear Pad: Soft Vinyl (Washable) * Headband: Vinyl with Comfort Sling * Headphone Cup Noise reducing, ABS plastic for durability * Weight 6.7 oz * Compatible with PC and Mac computers * CPSIA tested