The Eartec UL431 UltraLITE 4-Person Headset System includes one UltraLITE Single Master headset, two UltraLITE Single Remote headset, one UltraLITE Double Remote headset, four batteries, an eight-port charger, 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 United States.

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�.