2500mAh Portable Charger Chargeable Power Bank Backup Case External Power Backup Battery For iPhone 5 5S (Pink) 2500mAh external battery backup case for iPhone 5 & 5S Battery is consealed in protective case Slim and light weight design Power LED lights to show how much charge the battery has left Adds up to: talk time 12 hours, internet use 9 hours, audio playback 44 hours, video playback 11 hours