3000mAh Portable USB External Rechargeable Backup Battery Power Bank Charger Case with Viewing Stand for Samsung Galaxy S4 mini i9190 - Black Compatible with Samsung GALAXY Mini S4,works both as an extended emergency battery and a protective back cover,charging and protecting 2 in 1; Works as both an extended battery set and a protection case LED light indicator for battery capacity; A perfect emergency backup when the internal battery of your device slips out; You can conveniently use your Samsung Mini S4 without removing the power case, back cover can bring full protection for your Phone,it is Ideal for long distance travel or business trip;