Specifications

Speaker 
Driver Unit: Φ50 mm
Impedance:16±15%Ω
Sensitivity: 110±3dB at 1KHZ
Frequency Response: 20Hz-20KHz
Output Power: 15mW

Microphone
Mic Unit: Φ6 mm
Impedance:2.2KΩ
Sensitivity: -42±3dB at 1KHZ

Cable Length:2M + 0.25M
Plug Type: Φ3.5mm