Founded in 1975, Armitron made digital watches during the heyday of the LED screen, updating to LCD technology and using Japanese-made quartz movements throughout the 1980s.

A glass adhesive technique makes sure the ring watch is water-resistant. A 6-digit digital LCD displays dual times (down to the second), a calendar, and a stopwatch.

What is a digital watch? Close your eyes and imagine one, and it’s most likely something cheapish and battery-powered. It is the watch equivalent of a Prius – you buy it for the job it does, not ...