Electronic giant Sony has introduced Sony Reader, a PDA sized device, which lets you to read ebooks. Also it comes with a headphone socket, which helps to hear MP3 songs as well.  

It lends the display technology from e-Ink.

Display      :   15 cm(6 inch)
Weighs      :   250 grams 
Thickness  :   2 cm

Supports Adobe PDF, JPEG & Blogs(RSS). It supports both Secure Digital & Memory Stick to have more memory.

Best of all is, many of the world's leading book publishers will support Sony eBook Reader, including Random House, HarperCollins, Penguin Putnam, Simon & Schuster and Time Warner Book Group.