... provided 3. suitable to load full container 4. OEM service High-quality Computer Accessories Headset specifications:1.Driver Unit: Φ40mm2.Freqency Response : ... Frequency Response: 160 Hz - 20 KHz Volume control knob Power button Headphone in jack USB poweredMotherboard Specifications:ATX Motherboard 775 ... card, usb flash drie, DVD-RW, hard disk, pc power supply, pc case etc, could be supplied by us also ...