Plusus Lifecard - The World's Thinnest Powerbank - Credit Card Size - Carry in Wallet/Purse - Built in Cable - Micro USB - Brushed Stainless Steel Fits just like a credit card but powers your device Built in cable for ultimate convenience. You dont need your cable to charge your device. 1500 mAH - Charge up to 45% of Samsung S6 High grade stainless steel space frame. Lazer welded and adhesive bonded for structurel strength. Winner of iphone Life Magazine - Best of CES 2016