Inline control/soft form ear pads for comfortable & extended use for:  PC calling， internet voice chat， gaming & music. Driver Unit : Ø40mm.  Impedance: 32±15%.  Sensitivity: 105dB±3dB at 1 KHz.  Frequency Response: 20-18，000Hz ，  Power Capability: 100mW ， R.M.S: 2mW.  Cable Length: 2.5m±0.15m. Plug Type: Ø3.5mm Stereo