Driver Driver Diameter: 50mm Frequency Range: 20 – 20KHz Impedance: 20? Sensitivity: 120dB±3dB Output Power: 20mw Microphone Mic Impedance: <2.2K Sensitivity: -42 ±3db Frequency Range: 20 – 16KHz Directivity: Omnidirectional Pulse 7 Mobile Form Factor Ear Cushions: Vegan Leather Wire Length: 2.2M±3CM Chassis Materials: ABS+PP Connector Type: 4-Steps 3.5mm jack OS Requirement: WinXP/Win7/Win8/Win10 Net weight: 280g Overall Dimension: 205 X 222 X 87 mm In-Line Volume Controller Available