RND Dock and 2nd Battery Charger for Samsung Galaxy S III (3) (WITH AUDIO OUT) (compatible without or with a slim-fit case) Automatically puts your handset into a customizable desktop mode, arranging your phone's key features for more convenient use when docked Synchronize and Charge your Samsung Galaxy s III smartphone with the USB cable. Eliminates the hassle of removing your case. Supports majority of Cases. RND Power Solutions products are quality electronics accessories offered at a great value. Ships Fast! 100% satisfaction guaranteed!