Credit Card Thinnest Power Bank , Lanyos Battery Pack 1300mAh Wallet Sized Portable External Battery Charger The thinnest power bank only works for iphone 5 5s 5c 6s 6p 7 7p 8 Slip into credit card compartment of any wallet Dimension:88*58*4mm, Weight:60g The slimmest credit card power bank fits in any Pocket or Wallet Note: Please fully charge the power bank before using .