Mobile Z1 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. The Smoothtalker Mobile Z1 booster is the most technology advanced wireless cellular signal booster made. This booster has 50 dB gain and provides coverage throughout your car, truck, RV or boat. Comes with a 3" general purpose magnetic mount antenna.