ICOM HS-M73 is a VOX (Voice Operated Transmission) enabled headset for use with the ICOM M73 . Provides voice activated communications with in Rescue Helmets etc.FeaturesIcom HS-M73.001 VOX Behind The Head Splash-Proof HeadsetHS-M73.001 Behind-the-Head splash-proof headsetThe HS-M73 headset is very comfortable to wear and plugs straight into the radio.The HS-M73 forms part of a VOX (Voice Operated Transmission) enabled VHF handportable solution for mariners that require voice activated communications at sea. The solution features a VOX enabled IC-M73EURO Marine VHF and this commercial grade Behind-the-Head splashproof headset.