Slide this device onto your vehicle"s sun visor to turn your Bluetooth®-enabled cell phone into a wireless, handsfree speaker phone for use while driving. Keeps your eyes on the road, your hands on the wheel â?" and yourself out of trouble! When a call comes in, just press a button and start talking. Measures 6.1" x 2.1" x 1.3" and weighs 2.3 oz. A Sharper Image exclusive. One-year warranty.