Expertly mirrors back of iPhone 5s: Reduces static. Perfectly matches iPhone 5s color. Seamlessly duplicates metal textured feel with metal. 2000 mAh of power provides up to 260 hours of standby and 14 hours of talk time. Reinforced corners for full body protection. XPAL Verified™ technologies include: Short circuit/overcharge protection. Heat channels for heat dissipation. Pass-through charging (i.e.: device is charged first, followed by the case when plugged in). Most advanced/proprietary capacitor design.