Mobile X1 is the highest power booster on the market and will keep you connected where other boosters fail. It boosts signal to all cell phones and cellular devices within the booster's range simultaneously. This is a wireless booster that does not require a physical connection to the cell phone or cellular data device. Specifically kitted with extra cable for use in RVs and Large vehicles.This booster has 50dB of gain and provides coverage throughout your RV or boat. Comes with a 14" high gain large magnet base antenna that provides best performance in flat terrain.