Just picked up this G-Shock on a business trip. Still on Tokyo time. I simply have not found time yet to figure out how to connect it to my phone and use all the functions Fun watch, this shiny G-Shock with its 80s bling sci-fi look reminds me of TV shows such as Space 1999 and Buck Rogers Two iconic square / rectangular watch designs from different eras. Both with GMT / second time zone capability.
Just connected the G-shock to the app on my S8 phone + activated the auto-light feature. You can configure different time zones, reminders and alarms. Very easy to set up.