RND Dock and 2nd Battery Charger for Samsung Galaxy S II Epic 4G Touch or Skyrocket (Sprint & AT&T Versions) Synchronize and Charge your Sprint Galaxy S II Smartphone with the USB cable. Power Protection Circuit included. The cradle holds your smartphone and provides convenient access on your desk or nightstand. RND Power Solutions products comes in professional retail packaging and offers a 1 year hassle free warranty. 100% Customer Satisfaction is our Goal. PLEASE BE CAREFUL when buying products on Amazon and only buy from trusted sellers. Sellers without authorization may sell an inferior quality product carrying no branding. Examples of some trusted sellers would be RND Power Solutions and Amazon. Authentic RND Power Solutions products will have our branding on the product and packaging.