Cables Unlimited Audio Fone-Doc Hands-Free Speaker for iPhone 3G/3GS - Black The ultimate hands-free no pairing device for iPhone (3G & 3GS models) simple and easy to use Fone-Doc automatically activates for inbound calls, outbound calls or when iPhone audio/music is played Easily clips into place on the sun visor of your automobile with included metal clips which are magnetized to ensure product securely locks in place Fone-Doc is portable and can be used almost anywhere around your home or office as a desktop speaker phone, music player, etc. Built-in 3.5 input jack makes this unit compatible with external MP3 Players, iPods and more