Keep your phone fully charged, even on long trips or for emergencies. Thie Smart emergency charger comes with iPhone connector, Mini USB (Universal Serial Bus) & Micro USB (Universal Serial Bus) connectors. Simply put the 2 included AA batteries in the battery holder & connect the charger to the phone & it will replenish up to 80% battery life. The full charger compatability list is available at: www.santokgroup.co.uk/marketing/thumbsup/SMARTCHARGER-fullcompatibility.docx