Support Pass-Through Function- The Emergency portable charger compatible with any series of Phone, The Built in lightning connector can easily to charge your Phone without cable. Remove the phone case before charging- Need to remove the phone case, If charging while wearing a phone case, it's easy to loose, may cause poor contact and can not be charged. Ultra compact and Portable- Built-in 1500mAh high quality battery, Suitable for outdoor emergency use. convenient to hang on the key ring, ultal-small and ultra-light, can be carried to most of the size of pocket or handbag, you can use it anytime and anywhere. For emergency backup use- when the power of the phone is low than 10%, it can be used as an emergency backup prevent the phone from shutting down. High speed charging and multi-protection- Safe circuit design support to charge your phone at a high speed safely, can avoid over-charge, over-discharge, short-circuit and overload, the LED indicator light flashes red when charging, and automatically stops flashing and stay light on red light after charging is completed.