It is inconvenient to take your battery charger along with you every day. Don’t worry， with this 3500mAh 5V Back Clip Power Pack for SONY Xperia Z1 L39H， you can charge your cell phone at anytime anywhere. This high capacity universal battery is small enough to fit in the palm of your hand， yet provides effective power. It is ideal for long flights and business trips. Super convenient built-in charging plug frees you from carrying any extra cables when you’re on the go. Supply instant power to charge your device anytime， anywhere! Come to order one now.                                    Features            Supply instant power to charge your device anytime， anywhereFit for SONY Xperia Z1 L39H， thin and coolSlim and stylish design， portable to carryWith back clip design， it brings you much convenienceLED indicates charge levelSuitable for both indoor and outside                                                             Specifications             Battery Type     Li-polymer Battery    <br> Capacity     3500mAh    <br> Input Voltage     DC 5V    <br> Input Current     500mA    <br> Output Voltage     DC 5V    <br> Output Current     800mA    <br> Dimensions     (5.71 x 2.95 x 0.55)" / (14.5 x 7.5 x 1.4)cm (L x W x H)    <br> Color     White    <br> Weight     3.7 oz / 105 g    <br> Compatible with     SONY Xperia Z1 L39H       <br>                                                             Package Includes            1 x Back Clip Power Pack<br>