The most significant aspect of the new G-SHOCK Move collection is the presence of an optical heart-rate sensor that can measure your heart rate by detecting the blood flow under the skin. This sensor will provide you with at-a-glance health tracking, but it is most beneficial once you’ve begun exercising, as the watch has a unique “heart-rate zone” that shows exercise intensity at five different stages, making it useful for managing pace whether you’re going for a simple jog or undergoing endurance training. G-SHOCK didn’t just add a heart-rate monitor and call it a day, as the Move incorporates a system for determining your VO2max level, which combines your heart rate and running speed to calculate the rate of oxygen consumption during exercises of increasing intensity… More here.
Casio had a chance here. The company was well placed to enter this market before the likes of Fitbit and Apple came along, but as a first offering this is bizarre in a world where the Apple Watch is selling in such big numbers. One thing about all stands out as ridiculous here-
63mm x 55mm diameter; 20.4mm thickness