G-Shock GMAS 140-1A. From the G-SHOCK S-Series of highly popular analog-digital watch comes new model with new face and hand design. As with the G-SHOCK GA-140, these models features a motif that resembles a 90's stereo component device or portable music player that has been updated to a modern refined look. Subdued pink and blue, purple, and lime coloring matches the hues of modern sneakers. Shock resistant. ISO 764 Class Magnetic Resistance. Speed measurements. Imported.