We were lucky enough to spend some time with Qualcomm's upcoming Toq smartwatch this afternoon, and I left impressed. The Toq's primary value comes in the form of a Mirasol display. Mirasol was demoed in "production ready" form in 2011 at CES by Qualcomm, but the actual products never came.
If you're not familiar, Mirasol is a full-color e-ink style display without e-ink's terrible refresh latency. As its name suggests, Mirasol displays actually get better in sunlight, as they refract incoming ambient light to make the display more vivid.