Type: Headphone Item No.:M803MV Features: 1) Frequency Response: 50 Hz-20k Hz 2) Speaker Impedance: 32 3) Driver Unit: 40mm 4) Rated Power: 25mW 5) Power Handling Capability: 50mW 6) Cable Length: 2.3M 7) Sensitivity: 115+/-3dB/mW 8) Microphone: 6?mm-58dB+/-2dB 9) Plug: 3.5mm, Microphone in Red, Earphone in Black