Qualcomm made an unexpected splash at IFA 2013 when it revealed the Toq-- a Galaxy Gear/SmartWatch 2 rival with an even slimmer display within a similar adjustable rubber wristband.
While ultimately similar to most other takes on the smartwatch format, Qualcomm claims the Toq has a couple of unique selling points. First is the display, an always-on Mirasol “interferometric modulator display” that supposedly “leverages the light around it so you can see your screen anywhere, even in bright sunlight."
According to the company the display sips so very little power it not only allows for "days" for battery life, it does not even need an on/off button.