I got this to use in my convertible with my iPhone 3G-S and thanks to the included base and cable I could position it where it could work best while driving topless. Easily switches in and out of music and as long as the battery is well charged, the signal strength is sufficient. The build quality leaves a lot to be desired. When I first plugged in the usb power adapter into the dash power port, it disassembled in my hand. Replaced with better quality unit from Radio Shack. Since then, it has worked well. Good alternative in cars not equipped with in-dash Bluetooth.