There are more and more mobile power chargers in the current market. You may be confused about which one you canrely on. Now with this ROMOSS 10400mAh 3.7V Universal Portable USB Mobile Power Charger， all of your unnecessary concern can be solved! Adopting high quality chip， our mobile power charger will effectively protect your device and guarantee long battery life. The large 10400mAh battery capacity could meet your daily demands perfectly. Also， it’s perfectly designed with overcharge !#!amp!*! overdischarge prevention as well as short circuit protection. A portable and handy assistant for all kinds of people on the go!                                    Features             Mobile power storage， portable for both indoor and outdoor use<br> Tested and excellent quality ensured<br> 10400mAh， rechargeable from the USB port<br> Perfect power supply for business trip， travel， field work and so on<br> Fit for cellphone， MP3， PDA， console and other digital products<br> USB port， plug and play， charge your device whenever and wherever<br> Exquisite and durable， special for several types of digital devices in your family<br> Portable design， convenient to carry<br>                                                            Specifications            Specifictions        <br> Capacity     10400mAh  3.7V/38.5Wh    <br> Input Voltage     DC 5V     <br> Input Current     1A (Max.)    <br> Output Voltage     DC 5V     <br> Output Current      2.1A (Max.)    <br> Dimensions     (5.47 x 2.44 x 0.87)" / (13.9 x 6.2 x 2.2)cm (L x W x H)    <br> Color     White    <br> Weight     12.66 oz / 359 g    <br>                                                             Package Includes            1 x Mobile Power Charger<br>1 x USB Cable<br>