Heavy throat control microphone for two-way radio.
1.Acoustic tube ear/microphone for  two-way radio transceiver.
2.Providing private,discreet communication. With a convenient and larger, round 
  waterproof PTT.
3.Attaches against user’s throat,picking up audio directly from vocal cord vibrations which blocks background noise perfectly.
4.Suitable for hunting,fishing,motor-riding.
5.Available for Icom,standard,Yaesu,Adi,Kenwood,Motorola,Viser transceivers and other brands.

Speaker:
Speaker size:12mm
Sound pressure level:84dB±3dB
Impedance:20  Ω±15%

Microphone:
Type: Electret microphone
Microphone size: 9.7*5mm
Frequency response: 20-16000 HZ
Sensitivity: -40dB± 2dB
Impedance: 2.2K  Ω