High performance hearing protector with built-in communication radio for "hands free" short-range communications with other LiteCom headsets and comms radio devices on the same frequency. 38 sub channels allow users to communicate individually using the same channel. An auxiliary input also lets you connect a mobile phone or external com radio, regardless of the frequency. Integrated noise cancelling microphone. Level dependent function for ambient listening. An electronic voice tells wearers what settings are being adjusted - no need to take off the headset to check. Automatically switches off after two hours of non-use to save batteries. Li-ion Rechargable battery. Up to 1 kilometre range.