Are we there yet? A century of the smartwatch in pictures

With two Google-powered smartwatches currently on sale, and the circular Moto 360 already causing a stir among design geeks, wearables are one step closer to securing a place on our wrists. And while many of us aren't ready to strap on a Gear Live, G Watch or Pebble just yet, that doesn't mean the smartwatch is a new concept. In fact, depending on your definition of "smart," these gadgets have been fusing time-telling with extra functionality since the early 20th century. From wrist-borne spy cams to radio-controlled timepieces, here's a look at this wearable's evolution.

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Ticka Watch Camera (1905)

Here, we're taking a very liberal definition of "smartwatch" -- because the Ticka is essentially a spy camera packaged as a pocket watch. Still, it's one of the earliest examples of a timepiece incorporating additional functionality. In this case, that means the Expo sports a lens disguised as a "watch-winding stem," with a tab on the side to control exposure time. Invented by Swedish engineer Magnus Neill, the Ticka gained popularity on both sides of the Atlantic in the early 1900s, with variations made by Houghtons in England and the Expo Camera Company in the US.