RAN-3500Q is a noise cancelling two way radio heavy-duty headset, designed for people who worked in noisy environments, such as Security, Industry and Construction, and helping to improves communications. The RAN-3500Q with a comfortable headband and the magnetic ear cup is a new design(can be changeable). The 270°rotatable boom mic allows for the microphone to be positioned directly in front of the mouth for optimal audio quality.