Samsung Galaxy S7 Battery Case: Stalion Stamina Rechargeable Extended 4500mAh Protective Power Cover Charging Case (Pearl White) BATTERY CASE for your Galaxy S7. Dual functional case recharges and protects your phone at the same time! ULTRA SLIM thin smooth finish designed rechargeable 4500mAh battery extender case with Four LED light power indicators for controlled charging and protection experience giving you more Stamina to enjoy an additional 90% battery life. ONE TOUCH power button on the back of the case to activate your battery case with built in Smart sensor to prevent overcharging and overheating. SYNC & CHARGE your case at the same time! No need to remove your case! On board sound chamber for speaker and microphone function and access to audio jack with provided adapter. BACK-UP CASE also works as a portable power bank that fits perfectly around your Samsung phone without any wires or cords!