The e-book reader devices enable to store the details of large books in electronic format and reads them in several formats. The e-books use the E Ink technology that has the distinct advantage of only using power for page turns and provides a crisp, clear image on a larger display screen that rivals print seen in paper books. They can read books in several formats with lightning fast speeds and are highly configurable. Now there is no need to carry a hard cover book for reading while travelling in a bus or train. The e-books are handy and can be carried in less space and is ideal entertainment for travellers.
There are many advantages of using an e-book. It can be always with you. It is discreet and optimised for reading. It is ideal for students and commuters. One can just download and read 1000s of free Public Domain and classic novels. Currently the following products offer e-books of High Resolution Displays:

? ARINC’s eFlyBook, General Aviation eReader

? Emano Tec’s Medtab 100

? eREAD Technology’s STAReBOOK

? iRex Technologies’ iLiad, eReader

? Jinke’s Hanlin V Series eReader

? Polymervision’s Readius

? Sony’s Personal Reader (PRS-500) .

Of all the above it is considered that the Sony Portable Reader is favoured by many customers. It is quite easy to read the images that are displayed in black text on a white background. The text is displayed in three sizes and the number of pages in each case is automatically calculated.
Hundreds of books can be stored on a memory stick or SD cards as well as 64 megabytes of internal memory. The internal memory alone can store up to 80 books. People like to read while flying and this, Sony Portable Reader, is ideal for such people. .

A rechargeable battery provided with the reader last for at least 7500 continuous page turns. The pages can be turned by pressing buttons for forward and backward which are very comfortable to use. The reader is connectable to the Internet applications through a connecting device using an USB cable. This enables downloading of information from the Internet and storing in the e-book reader. One can download books that may be priced between $4 to $20. We can even download comics and graphic novels. Other types of media like MP3can be loaded in the memory cards and listened through a headphone. Photos can be viewed with JPG files.
The Sony Portable Reader is Convenient and easy to use although there is a drawback that the screen has no backlight.