TCL's NXTPaper 4.0 phones are coming to the U.S, and they let users switch from full color and e-paper mode with the flip of a switch.

Reading and writing on regular tablets can be tiring for your eyes, which is where E Ink can help. But colors often appear ...

Although electronic paper that can display monochrome static images has been growing in popularity, the next generation of products will soon be capable of displaying video in full colour.

Also your mileage may vary on this one, but I felt that the basic black color you'll use for writing most of the time looks a little more washed out, from certain angles, on the Paper Pro screen.