By simultaneous use of a SCBA and a radio, communication is getting difficult in a noisiness area. The MSA Osteo Communication system is a complete module with headband system for wearing with helmet in combination with or without full face mask. - Module integrating loudspeaker, - 32 Ω speaker (one speaker), max power 100 mW, - Bone conductive microphone, accelerometer 1 mV/mG, - Bandwidth 20 Hz to 20 kHz, - Voice transmission by skull vibration, - Connection in the helmet close to ear (Left or right) for the speaker module and attachment to the cradle net for the Bone microphone, - Possibility to adapt a pouch for use without helmet, - Loud and clear communication is possible. Connection with a wide range of brand and types of radios is possible. Note : please specify brand and type of radio in use when ordering.