The 50C Universal Clamp Kit with SOUND BY Harman Kardon features enhanced speakers and microphone, which were developed alongside the audio experts at Harman Kardon. The redesigned microphone and expertly crafted speakers allow the 50C to capture and deliver high quality incoming and outgoing audio. The speakers send crystal clear audio to riders' ears while the microphone, with a newly designed sensor, provides robust performance for voice communication while riding.