The Eartec UPMON2 is a professional Full Duplex Wireless Intercom System for 2 people that need to communicate and work with their hands. This compact system features the HUB Mini base/2 UltraPAKS with Monarch headsets that utilize Digital Enhanced Cordless Technology (DECT) on the 1.9 GHz band. This provides professional, simultaneous wireless communication within a 1/4 mile range line-of-sight. The HUB is a revolutionary mini base station that expands the capacity of the UltraLITE linking up to 8 wireless users, with a wired headset jack to accommodate larger production crews. Weighing only 9 oz. the HUB can either be placed strategically "on location" or belt worn so your crew can remain in constant full duplex voice contact with the freedom of mobility. The UltraPAK operates similar to the UltraLITE however is a belt-pack that accommodates a selection of wired headsets. Weighing only 2.5 oz this belt-pack provides a comfortable feel and includes a volume control, mute button, with LED indicator. The Monarch dual ear headsets offer a rugged yet comfortable design with foam padded speakers that sit on, not over, the ear allowing users to monitor the surrounding environment.. They feature a slender backhand manufactured with BPT, the same plastic material used to make automobile bumpers so are right at home in rough and tumble industrial environments. The complete Eartec UPMON2 includes 1 HUB mini-base/2 UltraPAKS/2 WIRED Monarch headsets/ batteries/charger/adapter and carrying case.