CST is showing their new CST-01 ultra-thin, flexible E Ink watch. The whole device is just 0.8 mm thick and weighs just 12 grams. It can full charge in 10 minutes (and runs for about one month). The lifespan is said to be about 15 years. Here's our friend Sriram Peruvemba (E Ink's marketing chief) showing this very cool phone:

CST just raised over $300,000 on Kickstarter to start production (the project goal of $200,000 was reached within 48 hours).