Wall AC Charger USB Sync Data Cable for iPhone 4, 3GS, and iPod
The plug (adapter) is  not the proper amperage and therefore it will take 5+ hours to charge your phone.      The clips on the sides of the wire are static and don't bend in to make a smooth in and out connection to your iphone.  I'm afraid that if you aren't careful, you will rip your iphone apart trying to unplug it.    Do not buy.