If you ask for my advice， I will recommend you this A30 Universal Dual USB 30000mAh Solar Powered Mobile Power because of its high capacity and excellent performance. Made of high quality material， this mobile power is up to standard， safe and reliable to use. For meticulous craftsmanship， it is exquisite and eye-catching for its generous appearance and perfect detail. With small size and light weight， this mobile power is very easy to carry and store. What’s more， featuring 30000mAh capacity， it will quickly and conveniently charge your mobile device. The particular dual USB design could simultaneously charge two devices， which is time saving. This wonderful mobile power will not let you down!                                    Features             Mobile power storage， portable for both in door and outside<br> Up to standard， safe and reliable to use<br> Perfect power supply for business trip， travel， field work， etc<br> USB port， plug and play， charge whenever and wherever<br> Repeatedly use of a single charge， portable design， convenient to carry<br> High capacity and portable design， great for travel use<br> Dual USB， time saving and much more convenient<br>                                                            Specifications             Input     5V 1A    <br> Output     5V 1A， 5V 2.1A    <br> Capacity     30000 mAH    <br> Interface     USB， Micro USB    <br> Weight     10.09 oz / 286 g    <br> Dimensions     4.99 x 3.07 x 0.91" / 12.7 x 7.8 x 2.3 cm (L x W x H)    <br> Color     Rose Red     <br>                                                             Package Includes            1 x Mobile Power<br>