I figure watches have been around for a few hundred years, so they were perfected over time. Smart watches have been around for like 10 years, so maybe in anot

I figure watches have been around for a few hundred years, so they were perfected over time. Smart watches have been around for like 10 years, so maybe in another couple decades we can expect efficiencies in power consumption and power storage. Or atleast something as revolutionary as user replaceable batteries.