Dual-screen e-readers have a number of advantages over single-screen e-readers. At least with two screens, you can work on more complex tasks such as browsing websites and write some notes on the color LCD screen while reading e-book on the e-Ink display.
The 1Cross Tech MIDhybrid is another dual-screen e-reader that packs an LCD screen with keypad on the right, an e-Ink display on the left and a hinge in the middle that makes it foldable and look like a book.
The 1Cross Tech MIDhybrid e-reader Marvell-powered and runs Android 1.6, like the Alex e-reader, allows the user to render content from the LCD over the e-Ink display. It’s equipped with 3G, Bluetooth connectivity, and a front-facing webcam. No information on the price or release date yet.
via slipperybrick
[...] an e-ink display which the main reason is to allow the battery to be more lasting. Some come with dual screens, with both a color screen and an e-ink. But the GM2000 e-reader from Gemei will need you to decide [...]