Casio G-Shock Men's Watch GA-2100RRB-4A Mineral Glass Shock Resistant Carbon Core Guard structure FOSSIL LADIES We bring back the retro

We bring back the retro feel and gaming graphics of the 1980s with interchangeable translucent bands and bezels in two-tone molded resin for a fresh new take on models from the past

Use your smartphone to take initial measurements of specific spans

a 10-year battery

Other functions include Tough Solar in combination with CASIO original power saving technology that delivers a stable supply of power

Casio G-Shock Men's Watch GA-2100RRB-4A Mineral Glass Shock Resistant Carbon Core Guard structure FOSSIL LADIES We bring back the retroFeatures ANALOG DIGITAL 2100 Series Indulge your passion for bold, bright toughness with an iconic G SHOCK style in the vivid red loved by trendsetters and athletes the world over. Introducing four iconic styles in G SHOCK brand red: the ever popular 5600, a direct legacy of the first ever G SHOCK; the 6900, a timeless cultural icon still loved by people of all ages; the 110 with strong, bold oversized case; and the streamlined beauty of the 2100 with