amanico[JLC Moderator]
402851
The time zones engraved on the back are just here to remind them to you, when you want to set your watch correctly. As for the power reserve indicators, they are...
Here to remind you that the Duometre has two barrels with their gear trains...
The Duometre is a concept I like a lot. A brillant family, with no equivalent anywhere else.
Best,
Nicolas