I am being charitable by assuming you are being facetious about Google Glass.
Friends of mine have "Glassholes will be buried out back" signs at their houses.
I wanted an HP-01 watch about 30 years ago, because I used HP calculators so many hours each day. But the economics were not there. I thought about buying one, looked at my HP-41C which was always with me, and decided to skip it. Good decision.
And, now, 30 years later, the "use case" for smart watches is even less compelling.
(Given that smartphones serve all of these needs, and more. I use an HP Reverse Polish ("dat be racist!") calculator on my smartphone, tablet, and laptop. Bliss.)
--Tim May