This innovative and sleek dual desktop charging station charges your phone and spare battery at the same time. Includes the following features: - 3-In-1 Features: Synchronize, Charge Phone and Charge Extra Battery. - Synchronize & Charge phone with USB cable. - Charge extra battery. - Blue LED indicator - Protection circuit - The USB docking cradle holds your Smartphone at a comfortable reading angle and provides convenient access on your desk. - Portable design and convenient for travelers and business users. - USB data cable - USB cable sync & charge phone - Can charge 2nd battery and phone at the same time or separately Includes: Dual Desktop Stand Data Cable Bonus Home Use AC Charger Bonus Car Use DC Charger Compatible with: All version of the Galaxy S4 for Verizon, Sprint, AT&T T-Mobile and Others.