PowerCom Plus, PowerCom, and LiteCom all offer reliable, efficient communication between two or more people in noisy environments. Although these products are very user-friendly, please take the time to read this instruction manual carefully to ensure proper set-up and use of all features PowerCom Plus and PowerCom are 2-way radio headsets pre-programmed to 14 channels in the 462 MHz frequency band with 38 privacy sub-channels. These units have up to 0.50 watts of transmitting power with a range of 2 km outdoors. The range will vary depending on local surrounding environmental conditions. LiteCom is a 2-way radio headset pre-programmed to 5 channels in the 49 MHz frequency band. This unit has up to 0.1 watts of transmitting power with a range of 100M outdoors. The range will vary depending on local surrounding environmental conditions.The PowerCom Plus/PowerCom headsets will not communicate with the LiteCom headsets. However, PowerCom Plus headsets will communicate with PowerCom headsets. All models feature advanced ghost voice confirmations of mode and level selections. As an added bonus, the ghost voices are selectable by the user in every model. Language options are English, French or Spanish.