Differences between G-Shock watches

[Rapid 17]

Could somebody answer a question for me please ?

I've noticed some G-Shocks which appear to be identical have model number GWG-100-1A3ER whilst others have GSG-100-1A3

Could somebody please tell me what the difference is between GWG and GSG ?

Thank you.

Geoff.

[Seamaster73]

W usually indicates Waveceptor (ie radio controlled automatic time updates). Often Casio sell two versions of the same watch, with and without, as there are places where radio signals cannot be received and this feature isn't useful.

[Rapid 17]

W usually indicates Waveceptor (ie radio controlled automatic time updates). Often Casio sell two versions of the same watch, with and without, as there are places where radio signals cannot be received and this feature isn't useful.

Thank you for the reply.