Samsung i9100 2200mAh Back Clip Mobile Power Charger is an innovative battery case for cell phone， it is made up of a smart slim-fit design because nobody wants to have a bulky case on their cell phone all the time. It has a minimal device and lightweight protective case that can stay on the cell phone at all times and an optional snap-on extended battery pack that can double battery life for cell phone when used. The protective case portion of the slim fit snap-on case fits snugly around your cell phone. It is perfect for long plane flights， road trips， or whenever you need to charge your mobile devices wherever you are.                                    Features            <br> With an innovative detachable design<br> Easily fit into your bag to provide instant power<br> Charge your devices anytime， anywhere<br> Extend inner battery life<br> Multifunctional， it is as a charger and an protective case<br>                                                            Specifications             Capacity     2200mAh    <br> Output Voltage     5V    <br> Output Current     2200mAh    <br> Input Voltage     5V    <br> Input Current     400-500mAh    <br> Weight     5.78oz / 164g    <br> Charging Time     3H    <br> Dimensions     5.43x 2.71 x 0.63" /13.58 x 6.9 x 1.6cm(L x W x H)    <br> Color     Black     <br>                                                             Package Includes            1 x Back ClipPower Bank<br>