The Wilson In-Building amplifier/repeater greatly improves signal strength inside a building when using your cellular phone or wireless network cards. It does this without a physical connection to your phone, allowing you to walk freely during a call. It even allows multiple phones to be used simultaneously.

The SignalBoost 3-watt amplifier significantly improves the performance of cell phones and data cards in both vehicle and in-building applications. Together with a magnet mount antenna (included), the amplifier's advanced technology captures and boosts faint signals from distant cell sites to enhance both voice and data communications. 

Turn your car into your own cell network! The Wilson wireless repeater allows for amplification of your mobile phone signal (or laptop date card) without a physical connection. Designed to increase your signal up to 10 times, increase your coverage area (up to 50 miles),  reduce disconnects and dropouts, and increase data communication rates needed for 3G technologies with up to 3 watts of power, 40 dB gain, and multiple handset capability.