Vertex Standard / Motorola MH-66A4B suits EVX-530 VX-450

Reduce background noise with this noise cancelling, rugged, high performance Remote Speaker Microphone(RSM).

With a 360 degree mounting clip, the RSM can be adjusted to meet the unique needs of each user.
It is water proof and dustproof, IP57 specifications for dust and water submersion: 3 feet for 30 minutes.