Specifications:

Mic Dimensions: 6.0*5MM
Microphone Sensitivity: -58DB ± 2DB
Directivity: Omni Directional
Driver Unit: 40MM
Speaker Impedance: 32Ω ± 15%
Plug Diameter: 3.5MM
Speaker Frequency Response: 20-20KHZ
Cord Length: 2M ± 5%