Casio G-Shock Men's Watch GA-2100-4A LADIES STANDARD access the watch’s acceleration sensor

access the watch’s acceleration sensor and use your smartphone GPS to adjust distances

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0mmCrystal HardlexLumiBrite: LumiBrite on hands and index(es)Clasp: Three-fold clasp with secure lock

Introducing bold designs with watch glass or dial featuring the original brick wall pattern of the very first G-SHOCK in full-on color

Casio G-Shock Men's Watch GA-2100-4A LADIES STANDARD access the watch’s acceleration sensorFeatures ANALOG DIGITAL 2100 Series From G SHOCK, the toughness watches that continue to evolve in search of ultimate strength, this model uses a carbon core guard structure. The case is made of fine resin containing carbon fiber that, although lightweight, exceeds the rigidity of normal resin. Prevents damage and deformation from impacts to protect the internal module. Additionally, the two layer structure of the back cover also guards against