The MSA Micro Communication system is a complete module with clip in system for wearing with helmet in combination with or without full face mask. MICRO Built-in Microphone - Module integrating both Loudspeaker and electret Microphone - 32 О© speaker one speaker , max power 100 mW - 50 Hz-12 kHz electro-dynamic microphone - Omnidirectional microphone - Connection in the helmet close to ear Left or right - Possibility to adapt a pouch for use without helmet