Treefort's Riedel Bolero Wireless Intercom 5-Headset Kit includes all pieces you need to get 5 crew members talking immediately. The wireless coverage is approximately a 300' radius around the access point.  
 
Kit includes:
(5) Bolero Beltpacks
(5) Medium Weight Single Muff Headsets
(1) Stand Alone License (1 SA License required for each net)
(1) Access Point (Each AP Supports up to 10 users in its area of RF coverage)
(1) Wall Wart Power Supply for Access Point
(1) 5-Bay Battery Charger
(1) 9" Cine-Arm with Mafer Clamp for Access Point Mounting
(7) 14h Batteries (5 in Packs, 2 Spare)