The Fantastic Vintage Wrist Gadgets That Came Way Before the Smartwatch

GizmodoThe Fantastic Vintage Wrist Gadgets That Came Way Before the SmartwatchGizmodoHumans have been putting technology on their wrists for a long time—and not just to tell the time. The Apple Watch is just the latest in a long line of wrist-borne devices, so here's a brief history of watches that were smart for their time, too.