Headphones with microphone GENIUS HS-M450, red

-Double size: 40mm - Frequency range: 150 Hz - 20000 Hz - Sensitivity: 105 ± 3 dB @ 1K Hz -Impedance: 32 ohms ± 5% -Type connection: Connection 3.5 mm jack -Microphone: Yes -Listening volume: YES -Weight: 115g -Red color Link to manufacturer site http://us.geniusnet.com/product/hs-m450