Zboost YX645 Large Application Signal Booster for Cellular Phone comes complete with the amplifier, power supply, donor antenna, coverage antenna and mounting hardware All you need to provide is your choice of 75 ohm cable from the donor antenna to the amp and 50 ohm cable from the amp to the coverage antenna. comes with an indoor, omnidirectional, ceiling tile mounted antenna. Increases Indoor Cellular Signal Coverage Up To 12,000 Sq Ft Decreases Dropped Or Missed Calls Extends Phone Battery Life (Uses Less Power When Signal Is Stronger) Works With All Phones and Us Carriers Except Nextel Maintains Network Integrity Using Patent-Pending Technologies