E Ink, a manufacturer of monochrome displays, has announced it is creating a 1.73-inch e-paper screen for use with smartwatches. Offering 16 shades of greyscale, a resolutiion of 320x240, and low power requirements, Slashgear reports that the display will be surfacing in the Sonostar Smartwatch, due to be shown later this week at Computex.