GA-2100AS-5A D280 while still providing the advanced

while still providing the advanced functions you love in a compact profile and comfortable fit

Automatic time adjustment (four times a day)

over a millimeter slimmer than the GST-B100

it’s a snap to sync with your smartphone via Bluetooth® and tap into the CASIO WATCHES app for full functionality at your fingertips

GA-2100AS-5A D280 while still providing the advancedPlunge into cool blue waters under the blaze of the mid summer sun with the hallmark toughness of an oasis inspired G SHOCK. The slim, octagonal GA 2100 with a base color of navy blue. Then inspired by the refreshing sanctuary of an oasis lake, touches of blue green accent the dial. Summery seasonal colors evoke the thrill of an oasis suddenly emerging in a tropical landscape. A great casual accessory for your marine sports style or street savviest