For traveling within countries that have half-hour, versus full-hour time zones, Blancpain has released their first half hour time zone watch. It also functions nicely when you are traveling within standard hour increment time zone countries. The watch is 40mm wide in 18k red gold and clearly part of their Villeret collection.
See my full article on the Blancpain Villeret Hour-Hour Time Zone watch at Haute Living here.
Blancpain watches on eBay here.
See Blancpain watches on Amazon here.