The Rally Electronics Kit differs from the Basic Electronics Kit in two major ways. The microphone is upgraded to a magnetic-dynamic microphone, and it comes with the passive noise attenuating ear muffs with integrated loudspeakers. The ear muffs will significantly cut down on the noise level. This is great for anyone driving a very loud car, or at high speeds with the windows open. We do not recommend this setup for seriously high noise level environments like NASCAR or IRL situations. For that, the Ear Buds are the best bet. The magnetic-dynamic microphone does a better job of picking up your voice, and not the surrounding ambient sound. This goes a long way to aid clear communication which can be crucial in many situations. Comes in two styles, for closed face and open face helmets. The open face version (for Trophy helmets) has a boom mounted microphone.
