G-Shock's new G-STEEL GST-B300 makes its debut with a new Carbon Core Guard structure

The watch's durability is enhanced with a carbon fiber-reinforced resin.
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Casio G-Shock G-Steel GST-B300

Casio's latest addition to the G-STEEL lineup doubles down on durability with a Carbon Core Guard structure that brings the rigidity and lightness of carbon fiber to their premium watch line. The carbon fiber-reinforced resin is also used on the front and side button guards to further enhance the watch's shock protection. The watch also features Bluetooth connectivity, a world time function, stopwatch, countdown timer, five multi-function alarms, Tough Solar power, and a battery life of 19 months with the power-saving function activated. 

gshock.com

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