Noise cancelling helmet headset with M101 dynamic noise cancelling microphone.  
Fitted with 4 pole male NEXUS type plug to suit the PMD Enduro Pro enduro intercom system as well as popular USA brand intercoms such as PCI, AVCOMM, RACER X, etc.

Made from Kevlar reinforced copper cabling to provide durability and rejection from outside electrical interference this headset is fitted with a 3.5mm mono ear bud socket to allow earbuds to be utilized with your helmet. (no speakers fitted to this headset)