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A motif that resembles a 90's stereo component device or portable music player is updated to a modern refined look while maintaining G-SHOCK level toughness

and a sapphire crystal with anti-reflective coating ensure that every detail of this timepiece exudes power and excellence

Size of case : 59

Enjoy a life of fewer battery changes with a large-case G-SHOCK with a 10-year battery you won’t have to worry about for ages

23 months * Varies depending on usage environment

GSTB400D-1A gd010 A motif that resembles aIntroducing new color variations to the lineup of slim G STEEL GST B400 models with new, improved designs made possible by a thin module and carbon core guard structure. There is a standard model in this lineup, the all silver color GST B400D. The GST B400 is made possible by even further miniaturization of its parts and thinning of its modules without sacrificing any Bluetooth or solar function. Power consumption has also been significantly reduced.