Sony has introduced a second electronic book PRS700 with an upgraded hardware. PRS700 has 6-inch electronic paper display with a touch panel and a reading light to read in dark. With touch panel users can turn e-pages, search through e-books by using an on screen keyboard and also highlight pages using stylus.350 e-books can be stored in its internal memory and more in the memory stick and SD Card media. The battery of this e-book supports 7500 pages of continuous reading. This e-book is compatible with e-book formats such as BBeB, Adobe PDF, Microsoft Word Documents and EPUB format. This weighs about 280 grams and will be as slim as a paperback book. This will be released in November with a cost of US$400.