1) Split design; 
2) compatible with MP3 earpiece;
3) IP54 compliance;
4) Reliable PU wire designed with bullet-proof material Kevlar.

Microphone Specifications:
Sensitivity: -42±3dB@1kHz 0dB=1V/Pa (finished product)
Impedance: ≤2.2kΩ@1kHz
Operating Voltage: 1–10VDC
PTT Life Circle: ≥100,000 times

Dust/Water Protection Class: IP54

Operating Temperature: -20 to 60℃

Application: for users engaged in retailing, entertainment, hospitality, food service and community management industries, as well as public security areas.
Applicable to: PD70X, PD78X, PT580H and PT-580