Blancpain Villeret Réveil GMT

Blancpain's Villeret Réveil GMT, reference 6640 3642 55B, is a GMT watch cased in red gold at 40.3 mm. The case measures 12.1 mm thick and carries a 22 mm lug width, with an opaline dial visible through a sapphire crystal. Inside is the self-winding calibre 1240H, giving 45 hours of power reserve. Beyond the second time zone, the watch has an alarm function paired with central seconds and a date display, a combination that draws on Blancpain's history with mechanical alarms. The dial's layout keeps the GMT and alarm indications legible without crowding the date window. An alligator leather strap closes with a folding clasp. Water resistance is modest, rated to 30 metres, in keeping with a dress watch built for city and travel wear rather than diving.