The stealth x2 is the highest power building booster on the market. It increases incoming and outgoing signals and features a multiple led console display with signal and gain level indicators to make installation quick, easy and effective. Features automatic oscillation control, and network overload protection to maintain maximum gain automatically at all times. These boosters can be used with optional splitters and antennas to provide a very large coverage footprint. High power 65 db gain booster best suited for rural and remote locations greater than 15km and up to 60km from the nearest cellular tower. The 3g,4g signal booster covers up to 7000 sq ft. And cellular frequency bands: band 5 (850 mhz), band2/25 (1900 mhz)