6670-3642-55B

With the Villeret Quantième Annuel GMT, Blancpain paired the annual calendar with a second time zone - a combination of complications not often encountered. The day, date and month are all displayed through apertures on the dial. The case measures 40mm across and is fitted with a see-through case back. Reference 6670-3642-55B has a red gold case and an opalin flinqué dial.