A little watch history: In 1983, Casio developed the G-Shock in an attempt to ruggedize the wristwatch for rougher environments. Today, G-Shocks run anywhere from $60-$1700, and have a variety of high-tech features. The latest G-Shock features a low-powered bluetooth chip allowing two-way communication with an iPhone and a select number of Android phones, allowing users to receive calls and play music. The G-Shock is transforming from a watch into a wearable computer. And Casio is not the only company exploring this middle ground. Pebble and Samsung have released true multi-purpose wristwatches, more affectionately named smartwatches. Apple is rumored to be releasing their own unit within the year. Google is on a fast-track to releasing its own wearable computer: Glass, which rests on the head instead of the wrist. Many more companies are rumored to be working on devices users can wear to connect to a smartphone. In fact, the smartwatch could be thought of as the next