... High-quality Computer Accessories Headset specifications:1.Driver Unit: Φ40mm2.Freqency Response : 20-20,000Hz3.Sensitivity:100dB±3dB 4.Impedance: 32 Ohm5.Cable ... size keyboard, multimedia keyboardm, ergonomics keyboard6, multi-functional keys . 7, lock-function with led light: num lock, caps lock, ... scroll lock.8, Plug and play 9, spill-resistant 10, responsive low ...