Engadget - While Casio's G-Shock GB6900 was among the company's main focuses at CES 2013, there was yet another watch to be seen inside the company's booth. Interestingly enough, though, the Japanese firm wasn't exactly showcasing its novel G-Shock GB5600A -- instead, we found it hiding comfortably underneath a representative's long-sleeve shirt. (Casio G-Shock GB5600A, Gadgets)