Tomoon Technologoy's T-Fire is an Android (v4.3) based smartwatch that uses a 1.73" 320x240 curved E Ink display. Other features include a 1Ghz CPU, 512MB of RAM, 4GB flash memory and sensors (gyroscope, compass and gravity.

The T-Fire should launch towards the end of December 2013 in China. The company says they got almost 20,000 pre-orders already, and they are also working on an iOS compatible model.

E Ink display info: 
1.73" 320x240 curved E Ink