1) Intrinsic safety design for intrinsically safe radios;
2) Ergonomic structure design for long wear;
3) Elasticity wire design for convenient adjustment of the length;
4) Reliable PU wire designed with bullet-proof material, Kevlar,
5) Soft earset made of TPE materials without hurting the skin.

Speaker specifications:
Impedance: 150Ω±15%@1kHz
Sound Pressure Level: 108±3dB@1kHz (finished product)
Power: 50mW(rated)/100mW(max)

Microphone specifications:
Sensitivity: -45±3dB@1kHz, 0dB=1V/pa
Impedance: ≤2.2kΩ@1kHz
Operating Voltage: 1–10VDC

PTT Life Circle: ≥100,000 times

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 for: PD79X Ex, PD78X and PD70X