RBC-0151Q is a two-way radio Skull microphone headset. It has been designed especially sturdy and robust for use in many different applications, as well as being water-resistant. The extra-large push-to-talk button ensures transmission even when used underneath gear and protective clothing.Desianed for extreme hazardous enviomments tis easy to use.This skull earphone can be easily and securely installed in the helmet and does not affect the use of other protective equipment such as breathing masks.