mophie juice pack Plus for iPhone 5/5s/5se (2,100mAh) - Red Rechargeable 2100mAh battery extender and protective case in one More than doubles the battery life of the iPhone -- Up to an additional 8 hrs. on 3G and 16 hrs. on 2G of Talk Time. Up to 7 hrs. of additional internet usage. Up to 44 hours of additional audio playback. Up to 11 additional hrs. of video playback. Acoustic Sound Enhancement - Open ports at the bottom/front of the case acts as an actual speaker box, redirecting sound from the bottom of the iPhone to the front, resulting in a richer, fuller sound quality. Pass Thru USB - Included micro USB cable allows you to simultaneously charge and sync your iPhone 4/4S to iTunes without ever having to remove the iPhone from the case. Quick recharging speed. Completely recharge iPhone in 1 1/2 hours.