4-119 series :

The two-wire earphone kit provides excellent durability, reliability and the environment in low configuration. This is the ideal requirements covert security applications, the clarity of the sound, and durability is very important. In addition to the purpose of monitoring, it is also commonly used in airports, casinos, manufacturing plants, croed control at conventions and concerts, and other working conditions require discrete communication security.

-Extended the acoustic tube length: 47cm;

-Two wires extend from PTT switch, one to the acoustic tube adapter (79cm) and another to the radio (87cm);

-Weight: 60g