MC0205B Features Designed for the Samsung Galaxy S5 Can function as both an external backup battery and flip case Features 4200mAh high capacity Lightweight for ease of carrying General Specs Capacity 4200mAH Input 5V， 0.5A Output 5V， 0.8A Compatibility Samsung Galaxy S5 Package Details Weight: 164.78 g Size: 19*9.8*2.5 cm