is a range of voice communications products designed around a high performance bone conduction microphone. Due to its unique design, the microphone used in the system has a flat response across the audio spectrum. Accordingly the speech quality is many times better than that obtained from conventional bone conduction systems. Although the response of the microphone is flat, the response of the human skull is not. The headsets and helmet kits and associated interfaces provide the necessary signal processing to take account of the skull’s effect, producing natural sounding speech. Due to the nature of the microphone, it provides a high level of background noise rejection. The equipment can provide clear, intelligible voice communications in ambient noise levels up to 120dBSPL.