With the addition of G-SHOCK’s unique Carbon Core Guard tech, the new GSTB300S-1A is every bit as capable as the brand’s other watches.

One name is synonymous with tough watches more than any other: G-SHOCK. Since 1983, the brand has been designing watches to endure maximum abuse in the most demanding environments. The new G-STEEL GSTB300S-1A is no different, though in comparison to some of G-SHOCK’s other watches it appears decidedly refined.
…
Continue here:
https://www.gearpatrol.com/watches/a34160135/g-shock-g-steel/