The Wi-Ex zBoost Cell Zone Signal Booster is a revolutionary, patent-pending new product that improves indoor cell phone coverage. zBoost captures the wireless signal outside, brings it inside and enhances, or boosts it – extending a Cell Zone in your home or office or your car.The zBoost YX500 CEL works with all phones on the 800MHz frequency. Includes some models of Verizon and Cingular and others. Designed as a...