The Ring Clock IS Heinlein's Finger Watch

One of my favorite pieces of technovelgy is the finger watch, which I first encountered in Robert Heinlein's excellent 1951 novel The Puppet Masters - still a great read, by the way.

"Seventeen hours" - The Old Man glanced at his finger watch and added - "and twenty-three minutes ago an unidentified space ship landed near Grinnell, Iowa."

I think that the Ring Clock is an excellent implantation of this science-fictional idea:


(Ring Clock - start at 4:00 for English)
The Ring Clock uses a lithium polymer batter, blue or orange LED, wireless charger, water resistance to 30 meters; it runs for a week between charges. It's awesome, in my opinion.

However, back to science fiction. In the intervening years I encountered an earlier use (by six months!) by HB Fyfe, in Astounding Fiction:

Crayn glanced at his finger watch as his aide fastened the cloak he had brought hurriedly after him. It was three-forty-seven, Galactic Time.

Heinlein fans can console themselves with the fact that there are 175 science fiction inventions by Robert Heinlein to look through...

Via Ring Clock.

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