One wire palm surveillance kit with high end Balanced-Armature driver for police and security.

The 1-wire surveillance mic has the acoustic tube ear piece on one wire with the mic and Push To Talk (PTT) button in-line.
Also, this 1-wire surveillance mic enables clear easily understood audio even in noisy environments and keeps your communications private, by not allowing bystanders to listen in.

1) One wire surveillance kit with bigger PU acoustic tube, outside  diameter is 3.4mm.
2) Quick disconnect earphone adapter for easy replacement of the tube.
3) Kevlar reinforced PU cable in 2.6mm diameter, strong cable with jacket made in Germany.
4) Tactical and popular PTT
5) With high end Balanced-Armature driver such as Knowles or made in Taiwan.