The kensington powerlift back up battery dock and stand gives your iphone hours of extra power converts for in hand use and offers a hands free stand also provides back up battery for ipad the 1200 mah battery pack provides rapid charging while the kickstand flips open to let you enjoy facetime chats and videos with no hands or fear of running out of power 1200 mah delivers the charge you need for extending music video and facetime chats adds up to 20 hours of music 5 hours of video 35