Vertex MH-66A7A Rugged speaker microphone
Model Number:  MH-66A7A
This high performance Remote Speaker Microphone(RSM) features noise cancelling microphone and is waterproof and dustproof. With a 360 degree mounting clip, the RSM can be adjusted to meet the unique needs of each user. It also meets IP57 specifications for water submersions - 3 feet for 30 minutes.