Description
CASIO G-SHOCK GST-B400-1AER strikes a rare balance — tough enough to be a true G-SHOCK, yet refined enough for everyday wear. This is not a bulky tool watch, but a smart, modern G-STEEL piece.
The 46.6 × 49.6 × 12.9 mm case is one of the slimmest in the G-STEEL lineup, offering excellent comfort. The Carbon Core Guard structure delivers strength without bulk, combining carbon and metal.
The design mixes a silver metal bezel with a black strap, creating a versatile and clean look.
The dial ensures clear readability, supported by Super Illuminator and Neobrite.
Powered by Tough Solar and equipped with Bluetooth, it offers automatic time sync and smartphone control.
Features include world time, stopwatch, timer, alarms, and 200 m water resistance.
CASIO G-SHOCK GST-B400-1AER — a mature, balanced G-SHOCK for everyday use.
























