Eartec is a worldwide leading supplier of full duplex wireless headphones. Full duplex send and receive at the same time - affording simultaneous, hands free communication. Talk just like on a telephone or wired system. A full line of headsets are available - a necessity when split second, instantaneous voice contact is needed! Pro Audio headsets and wired headsets for existing wired intercoms are also available. Check out our full line of headsets for Simplex two-way radios.