Jabra SP5050 Speakerphone for iPhone
Nice slim profile, easy setup, easy on road use. Excellent battery life and the ability to turn off the two already discrete display lights for nigh time driving. Automatic power down to save battery life. A easy and inexpensive way to make your handsfree! Remember California it is the law starting July 1st!
With the laws passing to handsfree only in the state of California this July 1st, a speakerphone from Jabra might be a good solution. All Jabra products feature great sound and durability, unless you lose the thing; that's happened to me about 3 times already but it's not Jabra's fault!