The Mobile X2 PRO is the highest power & gain mobile booster on the market. It will provide the largest coverage area and keeps you connected where all other boosters fail. It boosts signal to all cell phones and cellular devices within the booster's range simultaneously. This booster is self-adjusting to control feedback oscillation, overload protection to prevent auto shutdowns. The X2 PRO is network friendly, easy and simple to install, and can be up and running in minutes. This has 53dB of gain and provides the largest for coverage area for big vehicles, RVs, Boats, work trailers. Comes with a 11" Magnetic mount antenna, which is best suited to vehicles with obstructions on the roof where some vertical height is required.