How about a phone that conveniently sits on your wrist? Alexey Chugunnikov has designed the Rollerphone concept and hopes that one day it becomes a reality. It is a wearable cell phone that looks like a wristwatch.

The Rollerphone has a retractable transparent screen at the base, so when you get a call, just pull out the screen. It features a media center, so you can watch videos, chat online, play games, read e-books and more. It will also project the time. One day this will be practical, but for now it is just a concept.

[Techfresh]