MSA Sordin Supreme IV Waterproof Comms Headset.

Slimline electronic level dependent headset designed for SWAT teams and Law enforcement type applications. Electret microphone.

A slimeline headset that can be used with or without ballistic helmets. The electronic circuit allows ambient noise amplification and two way communications even in high noise areas. High noise is automatically reduced to safe levels. The microphone is highly noise compensated and weather resistant with no external cables. All electronics are shielded with excellent resistance to Radio Frequency Interference (RFI). Similar products are now used with radios upto 20 watt output, fully operational.