The UL4D UltraLITE 4-Person Headset System from Eartec includes one UltraLITE Dual Master headset, three UltraLITE Double Remote headsets, four batteries and a medium soft-side case. It is designed to accommodate four-person crews who need to communicate wirelessly while simultaneously working with their hands. It's intended for use in the Australia only ( Frequency regulations)

The UltraLITE single and dual headsets have the tranceiver built right inside the ear-cup, eliminating headset wires and belt worn radios. They provide two-way voice communication and the microphone arm can swivel 270°.