1. EXCELLENT COMMUNICATION: Behind the head headset provide sturdy and reliable two way radio communication, designed specifically for racing and industrial applications. 2. CLEAR TRANSMISSION: Equipped with dynamic noise reduction microphones and speakers, achieving clear transmission and unparalleled sound performance. 3. ADAPT TO NOISE: Designed specifically for extreme noise environments, combined with technology and comfortable wearing methods, to achieve optimal communication results. 4. WIDELY COMPATIBLE: The 5 pin port allows for use with almost any handheld radio on the market and can also be used in conjunction with racing scanners. 5. HEARING PROTECTION: Equipped with a 24 decibel NRR hearing protection device and clear listening sound speakers with volume control, it defends your hearing and provides a comfortable communication experience. Spec: Item Type: Behind The Head Headset Material: Carbon Fiber Connection Technology: Wired Connector: For Off Road Coil Cord head Hearing Protection: 24 decibel NRR hearing protection device How to Use: Plug and play PackageList: 1 x Behind The Head Headset 1 x Cable