Internal memory on a tablet is important, as it is needed to run the operating system and at least part of every app installed. External memory, through a memory card, is therefore useful for storing other content, such as downloaded ebooks and user created content such as photos or videos taken with a tablet’s camera, saving the tablet’s internal memory for the things that have to use it.
The iRulu 7″ Kids Tablet does come with a memory card slot, capable of taking memory cards up to 32 gigabytes in size.