The Eartec UltraLITE HUB 7-person intercom system includes a Hub mini base station, three UltraLITE single-ear remote headsets, three UltraLITE double-ear remote headsets and one Max4G single-ear headset. It also includes seven rechargeable 3.7 V lithium batteries, an eight-port charger with adapter and a large soft carry case for easy transport. This system is designed to accommodate teams of seven people who need to communicate wirelessly while simultaneously working with their hands. The HUB base station is designed to extend the range of your existing Eartec wireless system by more than 300 metres, and furthermore, to be portable; you can wear it on your belt, allowing your access point to move with you, or place it in a unique and adjustable location. Each UltraLITE double/single-ear remote headset works in conjunction with the HUB to control voice communication between users, and allows you to maintain constant full-duplex voice contact even while on the move. It features luxurious padding and a fully adjustable noise-cancelling microphone to ensure effective voice communication even in very noisy environments. The Max4G single-ear headset is a wonderful addition to your UltraLITE HUB full-duplex wireless intercom. It features a fully adjustable headband and a luxurious leatherette cushion that surrounds the ear, ensuring a firm and comfortable fit. In addition, the microphone arm rotates 270°, and when in the upright position, it automatically cuts the microphone gain. The eight-port charger with adapter is an eight-slot multi-port charger with a positive LED indicator. When the batteries reach full charge, the corresponding LED changes from red to green, indicating that the battery is fully charged and ready for use. The large soft carry case is made of waterproof nylon with a moulded plastic handle that makes it easy to transport for fieldwork. It features several padded compartments to keep all headsets organised. It also has a hook-and-loop fastener pocket for storing the multi-port charger, as well as a strap for hanging the HUB. In addition, the moulded plastic handle makes it easy to transport for fieldwork. HUB Mini full-duplex transceiver for 1 wired headset and up to 6 UltraLITE wireless headsets UltraLITE single-ear remote headset with rechargeable lithium battery UltraLITE double-ear remote headset with rechargeable lithium battery Max4G medium-use wired headset for UltraLITE HUB intercom system (single-ear) Multi-port charging base with adapter for 8 batteries Large padded soft carry case for selected Hub series headset systems