Providing duplex (2-way) communication, the slave WAERO Wireless Duplex Headset from CAME-TV is a component of the WAERO system. This slave unit must be paired with a separately available master headset or with a hub linked to a master headset. Pair up to three slaves with one master for a total of four headsets or pair up to eight slaves with one master and a hub-linked headphone for a total of 10 headsets. This unit is powered by a replaceable battery in the headset itself, eliminating the need for a bulky, clip-on battery pack.