Features:
1. Listen-only surveilance style earphone for use with two way radios.
2. High quality acoustic tube convey voice make you have better sense of hearing.
3. Talk and listen without holding the radio.
4. The unite provides and discreet communication.
Speaker
OD:Ø16mm
Frequency respone: 200-5000Hz
Sound Pressure Level: 90dB¡À3dB at 1000Hz
Impedance: 90¦¸¡À10%
Audio output: 200mW
Microphone
Size:9.7*5.0mm
Frequency respone: 20-16000Hz
Sensitivity: -36dB¡À2dB at 1000Hz
Resistance: 2.2K¦¸
