Audio tube earphone
computer security software1. Surveillance style earphone can be hidden very well.
2. PU cable  compliance RoHS.
3.High audio quality
4.Available for Icom, Standard, Yaeasu and Motorola ect brands.
SPK:
Size:16mm
Frequency：200-5000Hz
Audio pressure level：90dB±3dB
Impedance：90Ω±10%
Audio output：100mW
Microphone：
Size：9.7*5.0mm
Frequency：20-16000HZ
Sensitivity：-36dB±2dB
Impedance：2.2k Ω