Casio G-Shock (GW-7900) | Change DST for World Time

Casio G-Shock (GW-7900): How to set the DST value for the World Time mode. This is Module 3193 by Casio.
More about the Casio GShock (GW-7900): • Casio G-Shock (GW-7900...
Hope the video helps!