Casio's first smartwatch is an even more rugged G-Shock
 

Phone makers and start-ups were the first to attempt the modern smartwatch. Then, even more tech companies as well as a trickle of high-end watch makers, testing the water to see if their clientele were in the market for a wrist piece with something...

http://www.engadget.com/2016/01/05/c...ugged-g-shock/