HP Wired Earphone with Mic - Red

Interface: 3.5 mm  

The horn size: 4 Φ 10 mm              

Frequency range: 20 hz - 20 KHZ

Sensitivity: 103 db (at 1 KHZ)                    

The output power: 10 mw                               

The microphone: Φ 4 mm                           

Plug the microphone: Φ 4 mm                      

The frequency range: 100 hz - 16 KHZ

Sensitivity:Signal to noise ratio: ≤58dB