Check out the most popular G - Shock watches. Find the perfect tough watch for you or as a gift. These are the top 5 G - Shock choices for as assessed and adjudicated The Casio G - Shock Frogman remains a firm favorite for hardcore. Casio has long been a top player in the watchmaking world, and the G - Shock line is one of its most popular. G-Shocks are rugged, lightweight, and aesthetic.