The Casio G-Shock Master or G GWG-100-1AER is a shock-resistant men's watch that works on light energy. In addition to the time, the watch also shows the 24-hour indication, the weekday and the date. On the watch you can set up to 29 different time zones. You also use the watch as an alarm and stopwatch. Thanks to the shockproof design, the watch is resistant to shocks and vibrations. The LED light in the display ensures that you can also view this data easily in the dark.