CASIO has continued to pursue the evolution of its G-SHOCK watches based on the concept of “toughness.” G-SHOCK watches are durable enough to withstand any conceivable “tough environment,” including being water-proof, dust-proof and mud-proof. CASIO has also pursued performance and design features considered essential in a “tough environment” such as radio-controlled solar powered functions that run on light and display the correct time, and compass bearings and altitude measurements using sensor technology
