G-Shock Mid-Size S-Series CasiOak GMAS2100-4A Casio Watches The button shafts are equipped

The button shafts are equipped with gasket fittings to keep mud and dust out

Quad Sensor capabilities use compact sensors that make it possible to pack compass

these dive inspired ladies 3-hand analog timepieces feature 100M water resistance

all in a timepiece with a smaller profile

manage workouts

G-Shock Mid-Size S-Series CasiOak GMAS2100-4A Casio Watches The button shafts are equippedThis series downsizes the GA 2100 to create a simple and slim design. The octagonal bezel, flat face, simple bar hour markers, and carbon core guard structure that are distinctive features of the GA 2100 are now available in a compact configuration.