This product is the second generation model. The OneBook has dual 7.8 inch E ink displays, that opens and close, like a real book. The product was designed with manga cover art on the outside and on the spine, so you can put it on your shelf, and it looks like a real book. It is powered by 4 AAA batteries and are good for around 11,000 page turns. It weighs a paltry 1.1 pounds and  is easily portable.