Description
CASIO G-SHOCK GST-B500D-1A1ER represents a more refined generation of G-STEEL — slimmer, more comfortable, yet still tough.
With a 46.6 × 48.9 × 12.8 mm case and ~143 g weight, it offers a balanced feel on the wrist.
The Carbon Core Guard structure ensures durability while keeping the profile slim.
The full steel design delivers a clean, premium look, suitable for both casual and smart outfits.
Powered by Tough Solar and equipped with Bluetooth, it provides automatic time sync and smartphone control.
Features include world time, alarms, stopwatch, timer, and 200 m water resistance.
CASIO G-SHOCK GST-B500D-1A1ER — a modern, wearable evolution of G-STEEL.


















