It is available in two variants one is single and other is double screen (just like an open notebook) with 16 GB or 32 GB memory storage space. (newgadget.org)
Chronic stress can alter the connections among neurons that allow us to communicate — the basis of memory storage and retrieval — and control emotional responses. (edutopia.org)
Available on higher variants, the unit replaces the 1 GB internal memory storage. (auto.ndtv.com)