Wilson's Mobile Professional (801242) is a portable cell phone signal booster designed to increase your cellular signal wherever you go. Perfect when you are on the go, use it in your vehicle, office, home, hotel, or even in the airport. Improve your cell phone and data card performance anywhere you travel. With 2 times the output power of a typical cell phone, it features a built-in antenna, supports multiple phones and data cards, and offers mulitple power options.