General Spec Brand DXPOWER Model Eix-PC1700B Color black Capacity 1700mAh Input 5.0V Output 5.0V Standby Time 210 hours Talk Time   5 hours Video Play 5 hours Playback Time 28 hours Compatibility iPhone 4 Features Compact, stylish, safe and light-weight. Designed to fit the contour of iPhone 4 precisely. Ultra slim and custom-fit with open-face design for easy operation. You can charge your iPhoen4 in the case. Doubles battery life of iPhone 4G. Four Indicator lights, once all the lights are lit, it means the case is fully charged. Can protect your phone from scratching and dirt. Easy access to all buttons, controls and ports.