The UPMON3 UltraPAK 3-Person HUB Intercom System from Eartec includes one HUB Mini Base Station, three UltraPAK Remote Beltpacks, three Monarch Headsets, four rechargeable batteries, an 8-port battery charger, and a medium soft-side case. It is designed to accommodate three-person crews who need to communicate wirelessly while simultaneously working with their hands.