High-performance AT&T(R) 4G LTE cellular phone signal boosterCoverage range: 5,500 sq ft Reduces dropped & missed calls & boosts AT&T(R) 4G LTE data speeds for multiple simultaneous users Compatible with all mobile phones & devices that operate on AT&T(R)4G LTE network Automatically operates at maximum gain Extends phone battery life & talk timeKit includes everything needed for DIY setup: Amp base unit Indoor whip antenna Power supply 50ft RG-6 cable High-gain external antenna Mounting hardware