These 3M PELTOR WS LiteCom Pro III Headsets provide hearing protection alongside a built in programmable analogue and digital two way radio. Features and benefits Featured a push-to-listen for a quick and easy activation of level dependant function to help improve communication whilst in noisy environments Features 70 unique radio channels Includes noise cancelling waterproof microphone Designed for hand free use whilst in noisy environments with the voice operated transmission (VOX) Lithium-ion rechargeable battery are required