G‎-Shock is a brand of watches manufactured by Casio‎,‎ known for its resistance to shocks ‎(‎e‎.‎g‎.‎ hard knocks and strong vibrations‎)‎‎.‎ Its full form is Gravitational Shock‎.‎ They are designed primarily for sports‎,‎ military and outdoor adventure oriented activity‎;‎ nearly all G‎-Shocks have some kind of stopwatch feature‎,‎ countdown timer‎,‎ light and water resistance‎.‎