Headphones with microphone, plastic case and cushioned ear pads, very comfortable for both ears and head. -Frequency Response: 20Hz~20KHz -Connection: 2 x 3.5mm jack -Speaker: F40mm, 32 Ohm±10% -Speaker Sensitivity: 105dB±3dB -Microphone Size: 6*5mm -Microphone Sensitivity: -58dB±2dB -Microphone Type: Omnidirectional -Cable Length: 1.8m