This ZeroNoise open face helmet intercom kit features a dynamic noise cancelling microphone and high efficient speakers. The speakers are mounted into noise reducing foam ear cups to provide maximum comfort and isolation from unwanted external noise.Flexible boom so you can adjust the microphoneEar cups to reduce background noises, and offer maximum hearing protectionMale or Female Nexus connector optionDeveloped in conjunction with Bell racing helmets, the ZeroNoise open face headset kit is available with a choice of either male or female Nexus connectors making it suitable for use with a wide range of amplifiers.Male plug version - compatible with ZeroNoise Fearless, Intrepid Pro and Brave amplifiers and also OMP, Sparco and Peltor amplifiers which use female Nexus plug.Female plug version - compatible with Stilo WRC amplifiers and other brands which use a female Nexus plug.