Small size antenna. Ultra thin, great on mobile application. Works with Wilson Mobile Wireless or SIGNALBOOST amplifiers (sold separately) to boost your signal up to 10 times that of most cell phones. Compatible with all cell phones Increases driver safety. Supports any hands-free device, including ear-buds and Bluetooth® products. Adjustable to fit any size cell phone. Multiple mounting options: console, dashboard or windshield. Installs in minutes!