Keystone ECO Booster is an ultra slim 1400 mAH battery pack with a built-in retractable Micro USB cable that charges all smart phones that use Micro USB power input. Simply pull out its retractable Micro USB cable and connect to your smart phone, the blue LED indicators will light up showing the charging is in place and the power level in the Booster. One unique feature of the Booster is that it is attachable to the phone. The Booster has a removable protective cover with a built-in stand. Inside the cover is an adhesive pad for attaching to the back of your smart phone while charging. Put the removable protective cover to the other side of the Booster will enhance the grip of your phone. You can also open the stand and view and charge at the same time. The adhesive pad is removable and washable for repetitive use. The Booster & your phone can be recharged at the same time using the Micro USB cable that comes with your smart phone.
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